1 /* m6811_cpu.c -- 68HC11&68HC12 CPU Emulation
2 Copyright 1999, 2000, 2001, 2002, 2003, 2007, 2008, 2009, 2010
3 Free Software Foundation, Inc.
4 Written by Stephane Carrez (stcarrez@nerim.fr)
6 This file is part of GDB, GAS, and the GNU binutils.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include "sim-assert.h"
23 #include "sim-module.h"
24 #include "sim-options.h"
27 OPTION_CPU_RESET = OPTION_START,
34 static DECLARE_OPTION_HANDLER (cpu_option_handler);
36 static const OPTION cpu_options[] =
38 { {"cpu-reset", no_argument, NULL, OPTION_CPU_RESET },
39 '\0', NULL, "Reset the CPU",
42 { {"emulos", no_argument, NULL, OPTION_EMUL_OS },
43 '\0', NULL, "Emulate some OS system calls (read, write, ...)",
46 { {"cpu-config", required_argument, NULL, OPTION_CPU_CONFIG },
47 '\0', NULL, "Specify the initial CPU configuration register",
50 { {"bootstrap", no_argument, NULL, OPTION_CPU_BOOTSTRAP },
51 '\0', NULL, "Start the processing in bootstrap mode",
54 { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
59 cpu_option_handler (SIM_DESC sd, sim_cpu *cpu,
60 int opt, char *arg, int is_command)
64 cpu = STATE_CPU (sd, 0);
67 case OPTION_CPU_RESET:
72 cpu->cpu_emul_syscall = 1;
75 case OPTION_CPU_CONFIG:
76 if (sscanf(arg, "0x%x", &val) == 1
77 || sscanf(arg, "%d", &val) == 1)
79 cpu->cpu_config = val;
80 cpu->cpu_use_local_config = 1;
83 cpu->cpu_use_local_config = 0;
86 case OPTION_CPU_BOOTSTRAP:
87 cpu->cpu_start_mode = "bootstrap";
99 cpu_call (sim_cpu *cpu, uint16 addr)
102 cpu_set_pc (cpu, addr);
106 cpu_return (sim_cpu *cpu)
110 /* Set the stack pointer and re-compute the current frame. */
112 cpu_set_sp (sim_cpu *cpu, uint16 val)
114 cpu->cpu_regs.sp = val;
118 cpu_get_reg (sim_cpu* cpu, uint8 reg)
123 return cpu_get_x (cpu);
126 return cpu_get_y (cpu);
129 return cpu_get_sp (cpu);
132 return cpu_get_pc (cpu);
140 cpu_get_src_reg (sim_cpu* cpu, uint8 reg)
145 return cpu_get_a (cpu);
148 return cpu_get_b (cpu);
151 return cpu_get_ccr (cpu);
154 return cpu_get_tmp3 (cpu);
157 return cpu_get_d (cpu);
160 return cpu_get_x (cpu);
163 return cpu_get_y (cpu);
166 return cpu_get_sp (cpu);
174 cpu_set_dst_reg (sim_cpu* cpu, uint8 reg, uint16 val)
179 cpu_set_a (cpu, val);
183 cpu_set_b (cpu, val);
187 cpu_set_ccr (cpu, val);
191 cpu_set_tmp2 (cpu, val);
195 cpu_set_d (cpu, val);
199 cpu_set_x (cpu, val);
203 cpu_set_y (cpu, val);
207 cpu_set_sp (cpu, val);
216 cpu_set_reg (sim_cpu* cpu, uint8 reg, uint16 val)
221 cpu_set_x (cpu, val);
225 cpu_set_y (cpu, val);
229 cpu_set_sp (cpu, val);
233 cpu_set_pc (cpu, val);
241 /* Returns the address of a 68HC12 indexed operand.
242 Pre and post modifications are handled on the source register. */
244 cpu_get_indexed_operand_addr (sim_cpu* cpu, int restrict)
251 code = cpu_fetch8 (cpu);
253 /* n,r with 5-bit signed constant. */
254 if ((code & 0x20) == 0)
256 reg = (code >> 6) & 3;
257 sval = (code & 0x1f);
261 addr = cpu_get_reg (cpu, reg);
265 /* Auto pre/post increment/decrement. */
266 else if ((code & 0xc0) != 0xc0)
268 reg = (code >> 6) & 3;
269 sval = (code & 0x0f);
278 addr = cpu_get_reg (cpu, reg);
279 cpu_set_reg (cpu, reg, addr + sval);
280 if ((code & 0x10) == 0)
286 /* [n,r] 16-bits offset indexed indirect. */
287 else if ((code & 0x07) == 3)
293 reg = (code >> 3) & 0x03;
294 addr = cpu_get_reg (cpu, reg);
295 addr += cpu_fetch16 (cpu);
296 addr = memory_read16 (cpu, addr);
297 cpu_add_cycles (cpu, 1);
299 else if ((code & 0x4) == 0)
305 reg = (code >> 3) & 0x03;
306 addr = cpu_get_reg (cpu, reg);
309 sval = cpu_fetch16 (cpu);
310 cpu_add_cycles (cpu, 1);
314 sval = cpu_fetch8 (cpu);
317 cpu_add_cycles (cpu, 1);
323 reg = (code >> 3) & 0x03;
324 addr = cpu_get_reg (cpu, reg);
328 addr += cpu_get_a (cpu);
331 addr += cpu_get_b (cpu);
334 addr += cpu_get_d (cpu);
338 addr += cpu_get_d (cpu);
339 addr = memory_read16 (cpu, addr);
340 cpu_add_cycles (cpu, 1);
349 cpu_get_indexed_operand8 (sim_cpu* cpu, int restrict)
353 addr = cpu_get_indexed_operand_addr (cpu, restrict);
354 return memory_read8 (cpu, addr);
358 cpu_get_indexed_operand16 (sim_cpu* cpu, int restrict)
362 addr = cpu_get_indexed_operand_addr (cpu, restrict);
363 return memory_read16 (cpu, addr);
367 cpu_move8 (sim_cpu *cpu, uint8 code)
375 src = cpu_fetch8 (cpu);
376 addr = cpu_fetch16 (cpu);
380 addr = cpu_get_indexed_operand_addr (cpu, 1);
381 src = cpu_fetch8 (cpu);
385 addr = cpu_fetch16 (cpu);
386 src = memory_read8 (cpu, addr);
387 addr = cpu_fetch16 (cpu);
391 addr = cpu_get_indexed_operand_addr (cpu, 1);
392 src = memory_read8 (cpu, cpu_fetch16 (cpu));
396 src = cpu_get_indexed_operand8 (cpu, 1);
397 addr = cpu_fetch16 (cpu);
401 src = cpu_get_indexed_operand8 (cpu, 1);
402 addr = cpu_get_indexed_operand_addr (cpu, 1);
406 sim_engine_abort (CPU_STATE (cpu), cpu, 0,
407 "Invalid code 0x%0x -- internal error?", code);
410 memory_write8 (cpu, addr, src);
414 cpu_move16 (sim_cpu *cpu, uint8 code)
422 src = cpu_fetch16 (cpu);
423 addr = cpu_fetch16 (cpu);
427 addr = cpu_get_indexed_operand_addr (cpu, 1);
428 src = cpu_fetch16 (cpu);
432 addr = cpu_fetch16 (cpu);
433 src = memory_read16 (cpu, addr);
434 addr = cpu_fetch16 (cpu);
438 addr = cpu_get_indexed_operand_addr (cpu, 1);
439 src = memory_read16 (cpu, cpu_fetch16 (cpu));
443 src = cpu_get_indexed_operand16 (cpu, 1);
444 addr = cpu_fetch16 (cpu);
448 src = cpu_get_indexed_operand16 (cpu, 1);
449 addr = cpu_get_indexed_operand_addr (cpu, 1);
453 sim_engine_abort (CPU_STATE (cpu), cpu, 0,
454 "Invalid code 0x%0x -- internal error?", code);
457 memory_write16 (cpu, addr, src);
461 cpu_initialize (SIM_DESC sd, sim_cpu *cpu)
463 sim_add_option_table (sd, 0, cpu_options);
465 memset (&cpu->cpu_regs, 0, sizeof(cpu->cpu_regs));
467 cpu->cpu_absolute_cycle = 0;
468 cpu->cpu_current_cycle = 0;
469 cpu->cpu_emul_syscall = 1;
470 cpu->cpu_running = 1;
471 cpu->cpu_stop_on_interrupt = 0;
472 cpu->cpu_frequency = 8 * 1000 * 1000;
473 cpu->cpu_use_elf_start = 0;
474 cpu->cpu_elf_start = 0;
475 cpu->cpu_use_local_config = 0;
479 cpu->cpu_config = M6811_NOSEC | M6811_NOCOP | M6811_ROMON |
481 interrupts_initialize (sd, cpu);
483 cpu->cpu_is_initialized = 1;
488 /* Reinitialize the processor after a reset. */
490 cpu_reset (sim_cpu *cpu)
492 /* Initialize the config register.
493 It is only initialized at reset time. */
494 memset (cpu->ios, 0, sizeof (cpu->ios));
495 if (cpu->cpu_configured_arch->arch == bfd_arch_m68hc11)
496 cpu->ios[M6811_INIT] = 0x1;
498 cpu->ios[M6811_INIT] = 0;
500 /* Output compare registers set to 0xFFFF. */
501 cpu->ios[M6811_TOC1_H] = 0xFF;
502 cpu->ios[M6811_TOC1_L] = 0xFF;
503 cpu->ios[M6811_TOC2_H] = 0xFF;
504 cpu->ios[M6811_TOC2_L] = 0xFF;
505 cpu->ios[M6811_TOC3_H] = 0xFF;
506 cpu->ios[M6811_TOC4_L] = 0xFF;
507 cpu->ios[M6811_TOC5_H] = 0xFF;
508 cpu->ios[M6811_TOC5_L] = 0xFF;
510 /* Setup the processor registers. */
511 memset (&cpu->cpu_regs, 0, sizeof(cpu->cpu_regs));
512 cpu->cpu_absolute_cycle = 0;
513 cpu->cpu_current_cycle = 0;
514 cpu->cpu_is_initialized = 0;
516 /* Reset interrupts. */
517 interrupts_reset (&cpu->cpu_interrupts);
519 /* Reinitialize the CPU operating mode. */
520 cpu->ios[M6811_HPRIO] = cpu->cpu_mode;
524 /* Reinitialize the processor after a reset. */
526 cpu_restart (sim_cpu *cpu)
530 /* Get CPU starting address depending on the CPU mode. */
531 if (cpu->cpu_use_elf_start == 0)
533 switch ((cpu->ios[M6811_HPRIO]) & (M6811_SMOD | M6811_MDA))
538 addr = memory_read16 (cpu, 0xFFFE);
541 /* Expanded Multiplexed */
543 addr = memory_read16 (cpu, 0xFFFE);
546 /* Special Bootstrap */
552 case M6811_MDA | M6811_SMOD:
553 addr = memory_read16 (cpu, 0xFFFE);
559 addr = cpu->cpu_elf_start;
562 /* Setup the processor registers. */
563 cpu->cpu_insn_pc = addr;
564 cpu->cpu_regs.pc = addr;
565 cpu->cpu_regs.ccr = M6811_X_BIT | M6811_I_BIT | M6811_S_BIT;
566 cpu->cpu_absolute_cycle = 0;
567 cpu->cpu_is_initialized = 1;
568 cpu->cpu_current_cycle = 0;
570 cpu_call (cpu, addr);
576 print_io_reg_desc (SIM_DESC sd, io_reg_desc *desc, int val, int mode)
580 if (val & desc->mask)
581 sim_io_printf (sd, "%s",
582 mode == 0 ? desc->short_name : desc->long_name);
588 print_io_byte (SIM_DESC sd, const char *name, io_reg_desc *desc,
589 uint8 val, uint16 addr)
591 sim_io_printf (sd, " %-9.9s @ 0x%04x 0x%02x ", name, addr, val);
593 print_io_reg_desc (sd, desc, val, 0);
597 print_io_word (SIM_DESC sd, const char *name, io_reg_desc *desc,
598 uint16 val, uint16 addr)
600 sim_io_printf (sd, " %-9.9s @ 0x%04x 0x%04x ", name, addr, val);
602 print_io_reg_desc (sd, desc, val, 0);
606 cpu_ccr_update_tst8 (sim_cpu *proc, uint8 val)
608 cpu_set_ccr_V (proc, 0);
609 cpu_set_ccr_N (proc, val & 0x80 ? 1 : 0);
610 cpu_set_ccr_Z (proc, val == 0 ? 1 : 0);
615 cpu_fetch_relbranch (sim_cpu *cpu)
617 uint16 addr = (uint16) cpu_fetch8 (cpu);
623 addr += cpu->cpu_regs.pc;
628 cpu_fetch_relbranch16 (sim_cpu *cpu)
630 uint16 addr = cpu_fetch16 (cpu);
632 addr += cpu->cpu_regs.pc;
636 /* Push all the CPU registers (when an interruption occurs). */
638 cpu_push_all (sim_cpu *cpu)
640 if (cpu->cpu_configured_arch->arch == bfd_arch_m68hc11)
642 cpu_m68hc11_push_uint16 (cpu, cpu->cpu_regs.pc);
643 cpu_m68hc11_push_uint16 (cpu, cpu->cpu_regs.iy);
644 cpu_m68hc11_push_uint16 (cpu, cpu->cpu_regs.ix);
645 cpu_m68hc11_push_uint16 (cpu, cpu->cpu_regs.d);
646 cpu_m68hc11_push_uint8 (cpu, cpu->cpu_regs.ccr);
650 cpu_m68hc12_push_uint16 (cpu, cpu->cpu_regs.pc);
651 cpu_m68hc12_push_uint16 (cpu, cpu->cpu_regs.iy);
652 cpu_m68hc12_push_uint16 (cpu, cpu->cpu_regs.ix);
653 cpu_m68hc12_push_uint16 (cpu, cpu->cpu_regs.d);
654 cpu_m68hc12_push_uint8 (cpu, cpu->cpu_regs.ccr);
658 /* Simulation of the dbcc/ibcc/tbcc 68HC12 conditional branch operations. */
660 cpu_dbcc (sim_cpu* cpu)
667 code = cpu_fetch8 (cpu);
670 case 0x80: /* ibcc */
673 case 0x40: /* tbcc */
684 addr = cpu_fetch8 (cpu);
688 addr += cpu_get_pc (cpu);
689 reg = cpu_get_src_reg (cpu, code & 0x07);
692 /* Branch according to register value. */
693 if ((reg != 0 && (code & 0x20)) || (reg == 0 && !(code & 0x20)))
695 cpu_set_pc (cpu, addr);
697 cpu_set_dst_reg (cpu, code & 0x07, reg);
701 cpu_exg (sim_cpu* cpu, uint8 code)
707 r1 = (code >> 4) & 0x07;
711 src1 = cpu_get_src_reg (cpu, r1);
712 src2 = cpu_get_src_reg (cpu, r2);
713 if (r2 == 1 || r2 == 2)
716 cpu_set_dst_reg (cpu, r2, src1);
717 cpu_set_dst_reg (cpu, r1, src2);
721 src1 = cpu_get_src_reg (cpu, r1);
723 /* Sign extend the 8-bit registers (A, B, CCR). */
724 if ((r1 == 0 || r1 == 1 || r1 == 2) && (src1 & 0x80))
727 cpu_set_dst_reg (cpu, r2, src1);
731 /* Handle special instructions. */
733 cpu_special (sim_cpu *cpu, enum M6811_Special special)
741 ccr = cpu_m68hc11_pop_uint8 (cpu);
742 cpu_set_ccr (cpu, ccr);
743 cpu_set_d (cpu, cpu_m68hc11_pop_uint16 (cpu));
744 cpu_set_x (cpu, cpu_m68hc11_pop_uint16 (cpu));
745 cpu_set_y (cpu, cpu_m68hc11_pop_uint16 (cpu));
746 cpu_set_pc (cpu, cpu_m68hc11_pop_uint16 (cpu));
755 ccr = cpu_m68hc12_pop_uint8 (cpu);
756 cpu_set_ccr (cpu, ccr);
757 cpu_set_d (cpu, cpu_m68hc12_pop_uint16 (cpu));
758 cpu_set_x (cpu, cpu_m68hc12_pop_uint16 (cpu));
759 cpu_set_y (cpu, cpu_m68hc12_pop_uint16 (cpu));
760 cpu_set_pc (cpu, cpu_m68hc12_pop_uint16 (cpu));
766 /* In the ELF-start mode, we are in a special mode where
767 the WAI corresponds to an exit. */
768 if (cpu->cpu_use_elf_start)
770 cpu_set_pc (cpu, cpu->cpu_insn_pc);
771 sim_engine_halt (CPU_STATE (cpu), cpu,
772 NULL, NULL_CIA, sim_exited,
776 /* SCz: not correct... */
781 interrupts_raise (&cpu->cpu_interrupts, M6811_INT_SWI);
782 interrupts_process (&cpu->cpu_interrupts);
785 case M6811_EMUL_SYSCALL:
787 if (cpu->cpu_emul_syscall)
789 uint8 op = memory_read8 (cpu,
790 cpu_get_pc (cpu) - 1);
793 cpu_set_pc (cpu, cpu->cpu_insn_pc);
794 sim_engine_halt (CPU_STATE (cpu), cpu,
795 NULL, NULL_CIA, sim_exited,
806 interrupts_raise (&cpu->cpu_interrupts, M6811_INT_ILLEGAL);
807 interrupts_process (&cpu->cpu_interrupts);
815 sd = CPU_STATE (cpu);
817 /* Breakpoint instruction if we are under gdb. */
818 if (STATE_OPEN_KIND (sd) == SIM_OPEN_DEBUG)
821 sim_engine_halt (CPU_STATE (cpu), cpu,
822 0, cpu_get_pc (cpu), sim_stopped,
825 /* else this is a nop but not in test factory mode. */
831 int32 src1 = (int16) cpu_get_d (cpu);
832 int32 src2 = (int16) cpu_get_x (cpu);
836 cpu_set_ccr_C (cpu, 1);
840 cpu_set_d (cpu, src1 % src2);
842 cpu_set_x (cpu, src1);
843 cpu_set_ccr_C (cpu, 0);
844 cpu_set_ccr_Z (cpu, src1 == 0);
845 cpu_set_ccr_N (cpu, src1 & 0x8000);
846 cpu_set_ccr_V (cpu, src1 >= 32768 || src1 < -32768);
853 uint32 src1 = (uint32) cpu_get_x (cpu);
854 uint32 src2 = (uint32) (cpu_get_y (cpu) << 16)
855 | (uint32) (cpu_get_d (cpu));
859 cpu_set_ccr_C (cpu, 1);
863 cpu_set_ccr_C (cpu, 0);
864 cpu_set_d (cpu, src2 % src1);
866 cpu_set_y (cpu, src2);
867 cpu_set_ccr_Z (cpu, src2 == 0);
868 cpu_set_ccr_N (cpu, (src2 & 0x8000) != 0);
869 cpu_set_ccr_V (cpu, (src2 & 0xffff0000) != 0);
876 int32 src1 = (int16) cpu_get_x (cpu);
877 int32 src2 = (uint32) (cpu_get_y (cpu) << 16)
878 | (uint32) (cpu_get_d (cpu));
882 cpu_set_ccr_C (cpu, 1);
886 cpu_set_ccr_C (cpu, 0);
887 cpu_set_d (cpu, src2 % src1);
889 cpu_set_y (cpu, src2);
890 cpu_set_ccr_Z (cpu, src2 == 0);
891 cpu_set_ccr_N (cpu, (src2 & 0x8000) != 0);
892 cpu_set_ccr_V (cpu, src2 > 32767 || src2 < -32768);
901 src1 = (int16) cpu_get_d (cpu);
902 src2 = (int16) cpu_get_y (cpu);
904 cpu_set_d (cpu, src1 & 0x0ffff);
905 cpu_set_y (cpu, src1 >> 16);
906 cpu_set_ccr_Z (cpu, src1 == 0);
907 cpu_set_ccr_N (cpu, (src1 & 0x80000000) != 0);
908 cpu_set_ccr_C (cpu, (src1 & 0x00008000) != 0);
917 addr = cpu_fetch16 (cpu);
918 src1 = (int16) memory_read16 (cpu, cpu_get_x (cpu));
919 src2 = (int16) memory_read16 (cpu, cpu_get_y (cpu));
921 src2 = (((uint32) memory_read16 (cpu, addr)) << 16)
922 | (uint32) memory_read16 (cpu, addr + 2);
924 memory_write16 (cpu, addr, (src1 + src2) >> 16);
925 memory_write16 (cpu, addr + 2, (src1 + src2));
936 addr = cpu_fetch16 (cpu);
937 page = cpu_fetch8 (cpu);
939 cpu_m68hc12_push_uint16 (cpu, cpu_get_pc (cpu));
940 cpu_m68hc12_push_uint8 (cpu, cpu_get_page (cpu));
942 cpu_set_page (cpu, page);
943 cpu_set_pc (cpu, addr);
947 case M6812_CALL_INDIRECT:
953 code = memory_read8 (cpu, cpu_get_pc (cpu));
954 /* Indirect addressing call has the page specified in the
955 memory location pointed to by the address. */
956 if ((code & 0xE3) == 0xE3)
958 addr = cpu_get_indexed_operand_addr (cpu, 0);
959 page = memory_read8 (cpu, addr + 2);
960 addr = memory_read16 (cpu, addr);
964 /* Otherwise, page is in the opcode. */
965 addr = cpu_get_indexed_operand16 (cpu, 0);
966 page = cpu_fetch8 (cpu);
968 cpu_m68hc12_push_uint16 (cpu, cpu_get_pc (cpu));
969 cpu_m68hc12_push_uint8 (cpu, cpu_get_page (cpu));
970 cpu_set_page (cpu, page);
971 cpu_set_pc (cpu, addr);
977 uint8 page = cpu_m68hc12_pop_uint8 (cpu);
978 uint16 addr = cpu_m68hc12_pop_uint16 (cpu);
980 cpu_set_page (cpu, page);
981 cpu_set_pc (cpu, addr);
987 sim_engine_halt (CPU_STATE (cpu), cpu, NULL,
988 cpu_get_pc (cpu), sim_stopped,
996 cpu_single_step (sim_cpu *cpu)
998 cpu->cpu_current_cycle = 0;
999 cpu->cpu_insn_pc = cpu_get_pc (cpu);
1001 /* Handle the pending interrupts. If an interrupt is handled,
1002 treat this as an single step. */
1003 if (interrupts_process (&cpu->cpu_interrupts))
1005 cpu->cpu_absolute_cycle += cpu->cpu_current_cycle;
1009 /* printf("PC = 0x%04x\n", cpu_get_pc (cpu));*/
1010 cpu->cpu_interpretor (cpu);
1011 cpu->cpu_absolute_cycle += cpu->cpu_current_cycle;
1016 sim_memory_error (sim_cpu *cpu, SIM_SIGNAL excep,
1017 uint16 addr, const char *message, ...)
1022 va_start (args, message);
1023 vsprintf (buf, message, args);
1026 sim_io_printf (CPU_STATE (cpu), "%s\n", buf);
1027 cpu_memory_exception (cpu, excep, addr, buf);
1032 cpu_memory_exception (sim_cpu *cpu, SIM_SIGNAL excep,
1033 uint16 addr, const char *message)
1035 if (cpu->cpu_running == 0)
1038 cpu_set_pc (cpu, cpu->cpu_insn_pc);
1039 sim_engine_halt (CPU_STATE (cpu), cpu, NULL,
1040 cpu_get_pc (cpu), sim_stopped, excep);
1043 cpu->mem_exception = excep;
1044 cpu->fault_addr = addr;
1045 cpu->fault_msg = strdup (message);
1047 if (cpu->cpu_use_handler)
1049 longjmp (&cpu->cpu_exception_handler, 1);
1051 (* cpu->callback->printf_filtered)
1052 (cpu->callback, "Fault at 0x%04x: %s\n", addr, message);
1057 cpu_info (SIM_DESC sd, sim_cpu *cpu)
1059 sim_io_printf (sd, "CPU info:\n");
1060 sim_io_printf (sd, " Absolute cycle: %s\n",
1061 cycle_to_string (cpu, cpu->cpu_absolute_cycle,
1062 PRINT_TIME | PRINT_CYCLE));
1064 sim_io_printf (sd, " Syscall emulation: %s\n",
1065 cpu->cpu_emul_syscall ? "yes, via 0xcd <n>" : "no");
1066 sim_io_printf (sd, " Memory errors detection: %s\n",
1067 cpu->cpu_check_memory ? "yes" : "no");
1068 sim_io_printf (sd, " Stop on interrupt: %s\n",
1069 cpu->cpu_stop_on_interrupt ? "yes" : "no");