5 #include "sim-options.h"
8 #include "mn10300_sim.h"
13 #include "sim-assert.h"
39 host_callback *mn10300_callback;
44 /* simulation target board. NULL=default configuration */
45 static char* board = NULL;
47 static DECLARE_OPTION_HANDLER (mn10300_option_handler);
50 OPTION_BOARD = OPTION_START,
54 mn10300_option_handler (sd, cpu, opt, arg, is_command)
68 board = zalloc(strlen(arg) + 1);
78 static const OPTION mn10300_options[] =
80 #define BOARD_AM32 "stdeval1"
81 { {"board", required_argument, NULL, OPTION_BOARD},
82 '\0', "none" /* rely on compile-time string concatenation for other options */
84 , "Customize simulation for a particular board.", mn10300_option_handler },
86 { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
91 static void dispatch PARAMS ((uint32, uint32, int));
92 static long hash PARAMS ((long));
93 static void init_system PARAMS ((void));
95 static SIM_OPEN_KIND sim_kind;
101 struct hash_entry *next;
110 static int max_mem = 0;
111 struct hash_entry hash_table[MAX_HASH+1];
114 /* This probably doesn't do a very good job at bucket filling, but
120 /* These are one byte insns, we special case these since, in theory,
121 they should be the most heavily used. */
122 if ((insn & 0xffffff00) == 0)
167 /* These are two byte insns */
168 if ((insn & 0xffff0000) == 0)
170 if ((insn & 0xf000) == 0x2000
171 || (insn & 0xf000) == 0x5000)
172 return ((insn & 0xfc00) >> 8) & 0x7f;
174 if ((insn & 0xf000) == 0x4000)
175 return ((insn & 0xf300) >> 8) & 0x7f;
177 if ((insn & 0xf000) == 0x8000
178 || (insn & 0xf000) == 0x9000
179 || (insn & 0xf000) == 0xa000
180 || (insn & 0xf000) == 0xb000)
181 return ((insn & 0xf000) >> 8) & 0x7f;
183 if ((insn & 0xff00) == 0xf000
184 || (insn & 0xff00) == 0xf100
185 || (insn & 0xff00) == 0xf200
186 || (insn & 0xff00) == 0xf500
187 || (insn & 0xff00) == 0xf600)
188 return ((insn & 0xfff0) >> 4) & 0x7f;
190 if ((insn & 0xf000) == 0xc000)
191 return ((insn & 0xff00) >> 8) & 0x7f;
193 return ((insn & 0xffc0) >> 6) & 0x7f;
196 /* These are three byte insns. */
197 if ((insn & 0xff000000) == 0)
199 if ((insn & 0xf00000) == 0x000000)
200 return ((insn & 0xf30000) >> 16) & 0x7f;
202 if ((insn & 0xf00000) == 0x200000
203 || (insn & 0xf00000) == 0x300000)
204 return ((insn & 0xfc0000) >> 16) & 0x7f;
206 if ((insn & 0xff0000) == 0xf80000)
207 return ((insn & 0xfff000) >> 12) & 0x7f;
209 if ((insn & 0xff0000) == 0xf90000)
210 return ((insn & 0xfffc00) >> 10) & 0x7f;
212 return ((insn & 0xff0000) >> 16) & 0x7f;
215 /* These are four byte or larger insns. */
216 if ((insn & 0xf0000000) == 0xf0000000)
217 return ((insn & 0xfff00000) >> 20) & 0x7f;
219 return ((insn & 0xff000000) >> 24) & 0x7f;
223 dispatch (insn, extension, length)
228 struct hash_entry *h;
230 h = &hash_table[hash(insn)];
232 while ((insn & h->mask) != h->opcode
233 || (length != h->ops->length))
237 (*mn10300_callback->printf_filtered) (mn10300_callback,
238 "ERROR looking up hash for 0x%x, PC=0x%x\n", insn, PC);
249 /* Now call the right function. */
250 (h->ops->func)(insn, extension);
262 max_mem = 1 << power;
263 State.mem = (uint8 *) calloc (1, 1 << power);
266 (*mn10300_callback->printf_filtered) (mn10300_callback, "Allocation of main memory failed.\n");
279 sim_write (sd, addr, buffer, size)
282 unsigned char *buffer;
289 for (i = 0; i < size; i++)
290 store_byte (addr + i, buffer[i]);
295 /* Compare two opcode table entries for qsort. */
297 compare_simops (arg1, arg2)
301 unsigned long code1 = ((struct simops *)arg1)->opcode;
302 unsigned long code2 = ((struct simops *)arg2)->opcode;
312 sim_open (kind, cb, abfd, argv)
319 struct hash_entry *h;
323 mn10300_callback = cb;
325 /* Sort the opcode array from smallest opcode to largest.
326 This will generally improve simulator performance as the smaller
327 opcodes are generally preferred to the larger opcodes. */
328 for (i = 0, s = Simops; s->func; s++, i++)
330 qsort (Simops, i, sizeof (Simops[0]), compare_simops);
335 for (p = argv + 1; *p; ++p)
337 if (strcmp (*p, "-E") == 0)
338 ++p; /* ignore endian spec */
341 if (strcmp (*p, "-t") == 0)
342 mn10300_debug = DEBUG;
345 (*mn10300_callback->printf_filtered) (mn10300_callback, "ERROR: unsupported option(s): %s\n",*p);
348 /* put all the opcodes in the hash table */
349 for (s = Simops; s->func; s++)
351 h = &hash_table[hash(s->opcode)];
353 /* go to the last entry in the chain */
356 /* Don't insert the same opcode more than once. */
357 if (h->opcode == s->opcode
358 && h->mask == s->mask
365 /* Don't insert the same opcode more than once. */
366 if (h->opcode == s->opcode
367 && h->mask == s->mask
373 h->next = calloc(1,sizeof(struct hash_entry));
378 h->opcode = s->opcode;
385 /* fudge our descriptor for now */
391 sim_close (sd, quitting)
402 (*mn10300_callback->printf_filtered) (mn10300_callback, "sim_set_profile %d\n", n);
406 sim_set_profile_size (n)
409 (*mn10300_callback->printf_filtered) (mn10300_callback, "sim_set_profile_size %d\n", n);
420 sim_resume (sd, step, siggnal)
426 struct hash_entry *h;
429 State.exception = SIGTRAP;
437 unsigned long insn, extension;
439 /* Fetch the current instruction. */
440 inst = load_mem_big (PC, 2);
443 /* Using a giant case statement may seem like a waste because of the
444 code/rodata size the table itself will consume. However, using
445 a giant case statement speeds up the simulator by 10-15% by avoiding
446 cascading if/else statements or cascading case statements. */
448 switch ((inst >> 8) & 0xff)
450 /* All the single byte insns except 0x80, 0x90, 0xa0, 0xb0
451 which must be handled specially. */
554 insn = (inst >> 8) & 0xff;
556 dispatch (insn, extension, 1);
559 /* Special cases where dm == dn is used to encode a different
579 dispatch (insn, extension, 2);
630 insn = (inst >> 8) & 0xff;
632 dispatch (insn, extension, 1);
635 /* The two byte instructions. */
682 dispatch (insn, extension, 2);
685 /* The three byte insns with a 16bit operand in little endian
720 insn = load_byte (PC);
722 insn |= load_half (PC + 1);
724 dispatch (insn, extension, 3);
727 /* The three byte insns without 16bit operand. */
732 insn = load_mem_big (PC, 3);
734 dispatch (insn, extension, 3);
737 /* Four byte insns. */
740 if ((inst & 0xfffc) == 0xfaf0
741 || (inst & 0xfffc) == 0xfaf4
742 || (inst & 0xfffc) == 0xfaf8)
743 insn = load_mem_big (PC, 4);
748 insn |= load_half (PC + 2);
751 dispatch (insn, extension, 4);
754 /* Five byte insns. */
756 insn = load_byte (PC);
758 insn |= (load_half (PC + 1) << 8);
759 insn |= load_byte (PC + 3);
760 extension = load_byte (PC + 4);
761 dispatch (insn, extension, 5);
765 insn = load_byte (PC);
767 extension = load_word (PC + 1);
768 insn |= (extension & 0xffffff00) >> 8;
770 dispatch (insn, extension, 5);
773 /* Six byte insns. */
777 extension = load_word (PC + 2);
778 insn |= ((extension & 0xffff0000) >> 16);
780 dispatch (insn, extension, 6);
784 insn = load_byte (PC) << 24;
785 extension = load_word (PC + 1);
786 insn |= ((extension >> 8) & 0xffffff);
787 extension = (extension & 0xff) << 16;
788 extension |= load_byte (PC + 5) << 8;
789 extension |= load_byte (PC + 6);
790 dispatch (insn, extension, 7);
795 extension = load_word (PC + 2);
796 insn |= ((extension >> 16) & 0xffff);
798 extension &= 0xffff00;
799 extension |= load_byte (PC + 6);
800 dispatch (insn, extension, 7);
807 while (!State.exception);
812 for (i = 0; i < MAX_HASH; i++)
814 struct hash_entry *h;
817 printf("hash 0x%x:\n", i);
821 printf("h->opcode = 0x%x, count = 0x%x\n", h->opcode, h->count);
838 mn10300_debug = DEBUG;
840 sim_resume (sd, 0, 0);
845 sim_info (sd, verbose)
849 (*mn10300_callback->printf_filtered) (mn10300_callback, "sim_info\n");
853 sim_create_inferior (sd, abfd, argv, env)
860 PC = bfd_get_start_address (abfd);
867 sim_set_callbacks (p)
870 mn10300_callback = p;
873 /* All the code for exiting, signals, etc needs to be revamped.
875 This is enough to get c-torture limping though. */
878 sim_stop_reason (sd, reason, sigrc)
880 enum sim_stop *reason;
884 *reason = sim_exited;
886 *reason = sim_stopped;
888 if (State.exception == SIGQUIT)
891 *sigrc = State.exception;
895 sim_read (sd, addr, buffer, size)
898 unsigned char *buffer;
902 for (i = 0; i < size; i++)
903 buffer[i] = load_byte (addr + i);
909 sim_do_command (sd, cmd)
913 (*mn10300_callback->printf_filtered) (mn10300_callback, "\"%s\" is not a valid mn10300 simulator command.\n", cmd);
917 sim_load (sd, prog, abfd, from_tty)
923 extern bfd *sim_load_file (); /* ??? Don't know where this should live. */
926 prog_bfd = sim_load_file (sd, myname, mn10300_callback, prog, abfd,
927 sim_kind == SIM_OPEN_DEBUG,
929 if (prog_bfd == NULL)
932 bfd_close (prog_bfd);
935 #endif /* not WITH_COMMON */
940 /* For compatibility */
943 /* These default values correspond to expected usage for the chip. */
946 sim_open (kind, cb, abfd, argv)
952 SIM_DESC sd = sim_state_alloc (kind, cb);
953 mn10300_callback = cb;
955 SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
957 /* for compatibility */
960 /* FIXME: should be better way of setting up interrupts. For
961 moment, only support watchpoints causing a breakpoint (gdb
963 STATE_WATCHPOINTS (sd)->pc = &(PC);
964 STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC);
965 STATE_WATCHPOINTS (sd)->interrupt_handler = NULL;
966 STATE_WATCHPOINTS (sd)->interrupt_names = NULL;
968 if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
970 sim_add_option_table (sd, NULL, mn10300_options);
972 /* Allocate core managed memory */
973 sim_do_command (sd, "memory region 0,0x100000");
974 sim_do_command (sd, "memory region 0x40000000,0x200000");
976 /* getopt will print the error message so we just have to exit if this fails.
977 FIXME: Hmmm... in the case of gdb we need getopt to call
979 if (sim_parse_args (sd, argv) != SIM_RC_OK)
981 /* Uninstall the modules to avoid memory leaks,
982 file descriptor leaks, etc. */
983 sim_module_uninstall (sd);
988 && (strcmp(board, BOARD_AM32) == 0 ) )
991 STATE_ENVIRONMENT (sd) = OPERATING_ENVIRONMENT;
993 sim_do_command (sd, "memory region 0x44000000,0x40000");
994 sim_do_command (sd, "memory region 0x48000000,0x400000");
996 /* device support for mn1030002 */
997 /* interrupt controller */
999 sim_hw_parse (sd, "/mn103int@0x34000100/reg 0x34000100 0x7C 0x34000200 0x8 0x34000280 0x8");
1001 /* DEBUG: NMI input's */
1002 sim_hw_parse (sd, "/glue@0x30000000/reg 0x30000000 12");
1003 sim_hw_parse (sd, "/glue@0x30000000 > int0 nmirq /mn103int");
1004 sim_hw_parse (sd, "/glue@0x30000000 > int1 watchdog /mn103int");
1005 sim_hw_parse (sd, "/glue@0x30000000 > int2 syserr /mn103int");
1007 /* DEBUG: ACK input */
1008 sim_hw_parse (sd, "/glue@0x30002000/reg 0x30002000 4");
1009 sim_hw_parse (sd, "/glue@0x30002000 > int ack /mn103int");
1011 /* DEBUG: LEVEL output */
1012 sim_hw_parse (sd, "/glue@0x30004000/reg 0x30004000 8");
1013 sim_hw_parse (sd, "/mn103int > nmi int0 /glue@0x30004000");
1014 sim_hw_parse (sd, "/mn103int > level int1 /glue@0x30004000");
1016 /* DEBUG: A bunch of interrupt inputs */
1017 sim_hw_parse (sd, "/glue@0x30006000/reg 0x30006000 32");
1018 sim_hw_parse (sd, "/glue@0x30006000 > int0 irq-0 /mn103int");
1019 sim_hw_parse (sd, "/glue@0x30006000 > int1 irq-1 /mn103int");
1020 sim_hw_parse (sd, "/glue@0x30006000 > int2 irq-2 /mn103int");
1021 sim_hw_parse (sd, "/glue@0x30006000 > int3 irq-3 /mn103int");
1022 sim_hw_parse (sd, "/glue@0x30006000 > int4 irq-4 /mn103int");
1023 sim_hw_parse (sd, "/glue@0x30006000 > int5 irq-5 /mn103int");
1024 sim_hw_parse (sd, "/glue@0x30006000 > int6 irq-6 /mn103int");
1025 sim_hw_parse (sd, "/glue@0x30006000 > int7 irq-7 /mn103int");
1027 /* processor interrupt device */
1030 sim_hw_parse (sd, "/mn103cpu@0x20000000");
1031 sim_hw_parse (sd, "/mn103cpu@0x20000000/reg 0x20000000 0x42");
1033 /* DEBUG: ACK output wired upto a glue device */
1034 sim_hw_parse (sd, "/glue@0x20002000");
1035 sim_hw_parse (sd, "/glue@0x20002000/reg 0x20002000 4");
1036 sim_hw_parse (sd, "/mn103cpu > ack int0 /glue@0x20002000");
1038 /* DEBUG: RESET/NMI/LEVEL wired up to a glue device */
1039 sim_hw_parse (sd, "/glue@0x20004000");
1040 sim_hw_parse (sd, "/glue@0x20004000/reg 0x20004000 12");
1041 sim_hw_parse (sd, "/glue@0x20004000 > int0 reset /mn103cpu");
1042 sim_hw_parse (sd, "/glue@0x20004000 > int1 nmi /mn103cpu");
1043 sim_hw_parse (sd, "/glue@0x20004000 > int2 level /mn103cpu");
1045 /* REAL: The processor wired up to the real interrupt controller */
1046 sim_hw_parse (sd, "/mn103cpu > ack ack /mn103int");
1047 sim_hw_parse (sd, "/mn103int > level level /mn103cpu");
1048 sim_hw_parse (sd, "/mn103int > nmi nmi /mn103cpu");
1054 sim_hw_parse (sd, "/pal@0x31000000");
1055 sim_hw_parse (sd, "/pal@0x31000000/reg 0x31000000 64");
1056 sim_hw_parse (sd, "/pal@0x31000000/poll? true");
1058 /* DEBUG: PAL wired up to a glue device */
1059 sim_hw_parse (sd, "/glue@0x31002000");
1060 sim_hw_parse (sd, "/glue@0x31002000/reg 0x31002000 16");
1061 sim_hw_parse (sd, "/pal@0x31000000 > countdown int0 /glue@0x31002000");
1062 sim_hw_parse (sd, "/pal@0x31000000 > timer int1 /glue@0x31002000");
1063 sim_hw_parse (sd, "/pal@0x31000000 > int int2 /glue@0x31002000");
1064 sim_hw_parse (sd, "/glue@0x31002000 > int0 int3 /glue@0x31002000");
1065 sim_hw_parse (sd, "/glue@0x31002000 > int1 int3 /glue@0x31002000");
1066 sim_hw_parse (sd, "/glue@0x31002000 > int2 int3 /glue@0x31002000");
1068 /* REAL: The PAL wired up to the real interrupt controller */
1069 sim_hw_parse (sd, "/pal@0x31000000 > countdown irq-0 /mn103int");
1070 sim_hw_parse (sd, "/pal@0x31000000 > timer irq-1 /mn103int");
1071 sim_hw_parse (sd, "/pal@0x31000000 > int irq-2 /mn103int");
1073 /* 8 and 16 bit timers */
1074 sim_hw_parse (sd, "/mn103tim@0x34001000/reg 0x34001000 36 0x34001080 100 0x34004000 16");
1076 /* Hook timer interrupts up to interrupt controller */
1077 sim_hw_parse (sd, "/mn103tim > timer-0-underflow timer-0-underflow /mn103int");
1078 sim_hw_parse (sd, "/mn103tim > timer-1-underflow timer-1-underflow /mn103int");
1079 sim_hw_parse (sd, "/mn103tim > timer-2-underflow timer-2-underflow /mn103int");
1080 sim_hw_parse (sd, "/mn103tim > timer-3-underflow timer-3-underflow /mn103int");
1081 sim_hw_parse (sd, "/mn103tim > timer-4-underflow timer-4-underflow /mn103int");
1082 sim_hw_parse (sd, "/mn103tim > timer-5-underflow timer-5-underflow /mn103int");
1083 sim_hw_parse (sd, "/mn103tim > timer-6-underflow timer-6-underflow /mn103int");
1084 sim_hw_parse (sd, "/mn103tim > timer-6-compare-a timer-6-compare-a /mn103int");
1085 sim_hw_parse (sd, "/mn103tim > timer-6-compare-b timer-6-compare-b /mn103int");
1088 /* Serial devices 0,1,2 */
1089 sim_hw_parse (sd, "/mn103ser@0x34000800/reg 0x34000800 48");
1090 sim_hw_parse (sd, "/mn103ser@0x34000800/poll? true");
1092 /* Hook serial interrupts up to interrupt controller */
1093 sim_hw_parse (sd, "/mn103ser > serial-0-receive serial-0-receive /mn103int");
1094 sim_hw_parse (sd, "/mn103ser > serial-0-transmit serial-0-transmit /mn103int");
1095 sim_hw_parse (sd, "/mn103ser > serial-1-receive serial-1-receive /mn103int");
1096 sim_hw_parse (sd, "/mn103ser > serial-1-transmit serial-1-transmit /mn103int");
1097 sim_hw_parse (sd, "/mn103ser > serial-2-receive serial-2-receive /mn103int");
1098 sim_hw_parse (sd, "/mn103ser > serial-2-transmit serial-2-transmit /mn103int");
1100 sim_hw_parse (sd, "/mn103iop@0x36008000/reg 0x36008000 8 0x36008020 8 0x36008040 0xc 0x36008060 8 0x36008080 8");
1102 /* Memory control registers */
1103 sim_do_command (sd, "memory region 0x32000020,0x30");
1104 /* Cache control register */
1105 sim_do_command (sd, "memory region 0x20000070,0x4");
1106 /* Cache purge regions */
1107 sim_do_command (sd, "memory region 0x28400000,0x800");
1108 sim_do_command (sd, "memory region 0x28401000,0x800");
1110 sim_do_command (sd, "memory region 0x32000100,0xF");
1111 sim_do_command (sd, "memory region 0x32000200,0xF");
1112 sim_do_command (sd, "memory region 0x32000400,0xF");
1113 sim_do_command (sd, "memory region 0x32000800,0xF");
1119 sim_io_eprintf (sd, "Error: Board `%s' unknown.\n", board);
1126 /* check for/establish the a reference program image */
1127 if (sim_analyze_program (sd,
1128 (STATE_PROG_ARGV (sd) != NULL
1129 ? *STATE_PROG_ARGV (sd)
1133 sim_module_uninstall (sd);
1137 /* establish any remaining configuration options */
1138 if (sim_config (sd) != SIM_RC_OK)
1140 sim_module_uninstall (sd);
1144 if (sim_post_argv_init (sd) != SIM_RC_OK)
1146 /* Uninstall the modules to avoid memory leaks,
1147 file descriptor leaks, etc. */
1148 sim_module_uninstall (sd);
1153 /* set machine specific configuration */
1154 /* STATE_CPU (sd, 0)->psw_mask = (PSW_NP | PSW_EP | PSW_ID | PSW_SAT */
1155 /* | PSW_CY | PSW_OV | PSW_S | PSW_Z); */
1162 sim_close (sd, quitting)
1166 sim_module_uninstall (sd);
1171 sim_create_inferior (sd, prog_bfd, argv, env)
1173 struct _bfd *prog_bfd;
1177 memset (&State, 0, sizeof (State));
1178 if (prog_bfd != NULL) {
1179 PC = bfd_get_start_address (prog_bfd);
1183 CIA_SET (STATE_CPU (sd, 0), (unsigned64) PC);
1189 sim_do_command (sd, cmd)
1193 char *mm_cmd = "memory-map";
1194 char *int_cmd = "interrupt";
1196 if (sim_args_command (sd, cmd) != SIM_RC_OK)
1198 if (strncmp (cmd, mm_cmd, strlen (mm_cmd) == 0))
1199 sim_io_eprintf (sd, "`memory-map' command replaced by `sim memory'\n");
1200 else if (strncmp (cmd, int_cmd, strlen (int_cmd)) == 0)
1201 sim_io_eprintf (sd, "`interrupt' command replaced by `sim watch'\n");
1203 sim_io_eprintf (sd, "Unknown command `%s'\n", cmd);
1206 #endif /* WITH_COMMON */
1208 /* FIXME These would more efficient to use than load_mem/store_mem,
1209 but need to be changed to use the memory map. */
1223 return (a[1] << 8) + (a[0]);
1231 return (a[3]<<24) + (a[2]<<16) + (a[1]<<8) + (a[0]);
1235 put_byte (addr, data)
1244 put_half (addr, data)
1250 a[1] = (data >> 8) & 0xff;
1254 put_word (addr, data)
1260 a[1] = (data >> 8) & 0xff;
1261 a[2] = (data >> 16) & 0xff;
1262 a[3] = (data >> 24) & 0xff;
1266 sim_fetch_register (sd, rn, memory, length)
1269 unsigned char *memory;
1272 put_word (memory, State.regs[rn]);
1277 sim_store_register (sd, rn, memory, length)
1280 unsigned char *memory;
1283 State.regs[rn] = get_word (memory);
1289 mn10300_core_signal (SIM_DESC sd,
1295 transfer_type transfer,
1296 sim_core_signals sig)
1298 const char *copy = (transfer == read_transfer ? "read" : "write");
1299 address_word ip = CIA_ADDR (cia);
1303 case sim_core_unmapped_signal:
1304 sim_io_eprintf (sd, "mn10300-core: %d byte %s to unmapped address 0x%lx at 0x%lx\n",
1306 (unsigned long) addr, (unsigned long) ip);
1307 program_interrupt(sd, cpu, cia, SIM_SIGSEGV);
1310 case sim_core_unaligned_signal:
1311 sim_io_eprintf (sd, "mn10300-core: %d byte %s to unaligned address 0x%lx at 0x%lx\n",
1313 (unsigned long) addr, (unsigned long) ip);
1314 program_interrupt(sd, cpu, cia, SIM_SIGBUS);
1318 sim_engine_abort (sd, cpu, cia,
1319 "mn10300_core_signal - internal error - bad switch");
1325 program_interrupt (SIM_DESC sd,
1332 static int in_interrupt = 0;
1334 #ifdef SIM_CPU_EXCEPTION_TRIGGER
1335 SIM_CPU_EXCEPTION_TRIGGER(sd,cpu,cia);
1338 /* avoid infinite recursion */
1341 (*mn10300_callback->printf_filtered) (mn10300_callback,
1342 "ERROR: recursion in program_interrupt during software exception dispatch.");
1347 /* copy NMI handler code from dv-mn103cpu.c */
1348 store_word (SP - 4, CIA_GET (cpu));
1349 store_half (SP - 8, PSW);
1351 /* Set the SYSEF flag in NMICR by backdoor method. See
1352 dv-mn103int.c:write_icr(). This is necessary because
1353 software exceptions are not modelled by actually talking to
1354 the interrupt controller, so it cannot set its own SYSEF
1356 if ((NULL != board) && (strcmp(board, BOARD_AM32) == 0))
1357 store_byte (0x34000103, 0x04);
1362 CIA_SET (cpu, 0x40000008);
1365 sim_engine_halt(sd, cpu, NULL, cia, sim_stopped, sig);
1370 mn10300_cpu_exception_trigger(SIM_DESC sd, sim_cpu* cpu, address_word cia)
1372 ASSERT(cpu != NULL);
1374 if(State.exc_suspended > 0)
1375 sim_io_eprintf(sd, "Warning, nested exception triggered (%d)\n", State.exc_suspended);
1378 memcpy(State.exc_trigger_regs, State.regs, sizeof(State.exc_trigger_regs));
1379 State.exc_suspended = 0;
1383 mn10300_cpu_exception_suspend(SIM_DESC sd, sim_cpu* cpu, int exception)
1385 ASSERT(cpu != NULL);
1387 if(State.exc_suspended > 0)
1388 sim_io_eprintf(sd, "Warning, nested exception signal (%d then %d)\n",
1389 State.exc_suspended, exception);
1391 memcpy(State.exc_suspend_regs, State.regs, sizeof(State.exc_suspend_regs));
1392 memcpy(State.regs, State.exc_trigger_regs, sizeof(State.regs));
1393 CIA_SET (cpu, PC); /* copy PC back from new State.regs */
1394 State.exc_suspended = exception;
1398 mn10300_cpu_exception_resume(SIM_DESC sd, sim_cpu* cpu, int exception)
1400 ASSERT(cpu != NULL);
1402 if(exception == 0 && State.exc_suspended > 0)
1404 if(State.exc_suspended != SIGTRAP) /* warn not for breakpoints */
1405 sim_io_eprintf(sd, "Warning, resuming but ignoring pending exception signal (%d)\n",
1406 State.exc_suspended);
1408 else if(exception != 0 && State.exc_suspended > 0)
1410 if(exception != State.exc_suspended)
1411 sim_io_eprintf(sd, "Warning, resuming with mismatched exception signal (%d vs %d)\n",
1412 State.exc_suspended, exception);
1414 memcpy(State.regs, State.exc_suspend_regs, sizeof(State.regs));
1415 CIA_SET (cpu, PC); /* copy PC back from new State.regs */
1417 else if(exception != 0 && State.exc_suspended == 0)
1419 sim_io_eprintf(sd, "Warning, ignoring spontanous exception signal (%d)\n", exception);
1421 State.exc_suspended = 0;