[thirdparty/binutils-gdb.git] / sim / m68hc11 / interp.c

/* interp.c -- Simulator for Motorola 68HC11
   Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
   Written by Stephane Carrez (stcarrez@worldnet.fr)

This file is part of GDB, the GNU debugger.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "sim-main.h"
#include "sim-assert.h"
#include "sim-hw.h"
#include "sim-options.h"
#include "hw-tree.h"
#include "hw-device.h"
#include "hw-ports.h"

#ifndef MONITOR_BASE
# define MONITOR_BASE (0x0C000)
# define MONITOR_SIZE (0x04000)
#endif

static void sim_get_info (SIM_DESC sd, char *cmd);


char *interrupt_names[] = {
  "reset",
  "nmi",
  "int",
  NULL
};

#ifndef INLINE
#if defined(__GNUC__) && defined(__OPTIMIZE__)
#define INLINE __inline__
#else
#define INLINE
#endif
#endif

struct sim_info_list
{
  const char *name;
  const char *device;
};

struct sim_info_list dev_list_68hc11[] = {
  {"cpu", "/m68hc11"},
  {"timer", "/m68hc11/m68hc11tim"},
  {"sio", "/m68hc11/m68hc11sio"},
  {"spi", "/m68hc11/m68hc11spi"},
  {"eeprom", "/m68hc11/m68hc11eepr"},
  {0, 0}
};

struct sim_info_list dev_list_68hc12[] = {
  {"cpu", "/m68hc12"},
  {"timer", "/m68hc12/m68hc12tim"},
  {"sio", "/m68hc12/m68hc12sio"},
  {"spi", "/m68hc12/m68hc12spi"},
  {"eeprom", "/m68hc12/m68hc12eepr"},
  {0, 0}
};

/* Cover function of sim_state_free to free the cpu buffers as well.  */

static void
free_state (SIM_DESC sd)
{
  if (STATE_MODULES (sd) != NULL)
    sim_module_uninstall (sd);

  sim_state_free (sd);
}

/* Give some information about the simulator.  */
static void
sim_get_info (SIM_DESC sd, char *cmd)
{
  sim_cpu *cpu;

  cpu = STATE_CPU (sd, 0);
  if (cmd != 0 && (cmd[0] == ' ' || cmd[0] == '-'))
    {
      int i;
      struct hw *hw_dev;
      struct sim_info_list *dev_list;
      const struct bfd_arch_info *arch;

      arch = STATE_ARCHITECTURE (sd);
      cmd++;

      if (arch->arch == bfd_arch_m68hc11)
        dev_list = dev_list_68hc11;
      else
        dev_list = dev_list_68hc12;

      for (i = 0; dev_list[i].name; i++)
	if (strcmp (cmd, dev_list[i].name) == 0)
	  break;

      if (dev_list[i].name == 0)
	{
	  sim_io_eprintf (sd, "Device '%s' not found.\n", cmd);
	  sim_io_eprintf (sd, "Valid devices: cpu timer sio eeprom\n");
	  return;
	}
      hw_dev = sim_hw_parse (sd, dev_list[i].device);
      if (hw_dev == 0)
	{
	  sim_io_eprintf (sd, "Device '%s' not found\n", dev_list[i].device);
	  return;
	}
      hw_ioctl (hw_dev, 23, 0);
      return;
    }

  cpu_info (sd, cpu);
  interrupts_info (sd, &cpu->cpu_interrupts);
}


void
sim_board_reset (SIM_DESC sd)
{
  struct hw *hw_cpu;
  sim_cpu *cpu;
  const struct bfd_arch_info *arch;
  const char *cpu_type;

  cpu = STATE_CPU (sd, 0);
  arch = STATE_ARCHITECTURE (sd);

  /*  hw_cpu = sim_hw_parse (sd, "/"); */
  if (arch->arch == bfd_arch_m68hc11)
    {
      cpu->cpu_type = CPU_M6811;
      cpu_type = "/m68hc11";
    }
  else
    {
      cpu->cpu_type = CPU_M6812;
      cpu_type = "/m68hc12";
    }
  
  hw_cpu = sim_hw_parse (sd, cpu_type);
  if (hw_cpu == 0)
    {
      sim_io_eprintf (sd, "%s cpu not found in device tree.", cpu_type);
      return;
    }

  cpu_reset (cpu);
  hw_port_event (hw_cpu, 3, 0);
  cpu_restart (cpu);
}

int
sim_hw_configure (SIM_DESC sd)
{
  const struct bfd_arch_info *arch;
  struct hw *device_tree;
  int m6811_mode;
  sim_cpu *cpu;
  
  arch = STATE_ARCHITECTURE (sd);
  if (arch == 0)
    return 0;

  cpu = STATE_CPU (sd, 0);
  cpu->cpu_configured_arch = arch;
  device_tree = sim_hw_parse (sd, "/");
  if (arch->arch == bfd_arch_m68hc11)
    {
      cpu->cpu_interpretor = cpu_interp_m6811;
      if (hw_tree_find_property (device_tree, "/m68hc11/reg") == 0)
	{
	  /* Allocate core managed memory */

	  /* the monitor  */
	  sim_do_commandf (sd, "memory region 0x%lx@%d,0x%lx",
			   /* MONITOR_BASE, MONITOR_SIZE */
			   0x8000, M6811_RAM_LEVEL, 0x8000);
	  sim_do_commandf (sd, "memory region 0x000@%d,0x8000",
			   M6811_RAM_LEVEL);
	  sim_hw_parse (sd, "/m68hc11/reg 0x1000 0x03F");
	}

      if (hw_tree_find_property (device_tree, "/m68hc11/m68hc11sio/reg") == 0)
	{
	  sim_hw_parse (sd, "/m68hc11/m68hc11sio/reg 0x2b 0x5");
	  sim_hw_parse (sd, "/m68hc11/m68hc11sio/backend stdio");
	  sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/m68hc11sio");
	}
      if (hw_tree_find_property (device_tree, "/m68hc11/m68hc11tim/reg") == 0)
	{
	  /* M68hc11 Timer configuration. */
	  sim_hw_parse (sd, "/m68hc11/m68hc11tim/reg 0x1b 0x5");
	  sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/m68hc11tim");
	}

      /* Create the SPI device.  */
      if (hw_tree_find_property (device_tree, "/m68hc11/m68hc11spi/reg") == 0)
	{
	  sim_hw_parse (sd, "/m68hc11/m68hc11spi/reg 0x28 0x3");
	  sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/m68hc11spi");
	}
      if (hw_tree_find_property (device_tree, "/m68hc11/nvram/reg") == 0)
	{
	  /* M68hc11 persistent ram configuration. */
	  sim_hw_parse (sd, "/m68hc11/nvram/reg 0x0 256");
	  sim_hw_parse (sd, "/m68hc11/nvram/file m68hc11.ram");
	  sim_hw_parse (sd, "/m68hc11/nvram/mode save-modified");
	  /*sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/pram"); */
	}
      if (hw_tree_find_property (device_tree, "/m68hc11/m68hc11eepr/reg") == 0)
	{
	  sim_hw_parse (sd, "/m68hc11/m68hc11eepr/reg 0xb000 512");
	  sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/m68hc11eepr");
	}
    }
  else
    {
      cpu->cpu_interpretor = cpu_interp_m6812;
      if (hw_tree_find_property (device_tree, "/m68hc12/reg") == 0)
	{
	  /* Allocate core external memory.  */
	  sim_do_commandf (sd, "memory region 0x%lx@%d,0x%lx",
			   0x8000, M6811_RAM_LEVEL, 0x8000);
	  sim_do_commandf (sd, "memory region 0x000@%d,0x8000",
			   M6811_RAM_LEVEL);

	  sim_hw_parse (sd, "/m68hc12/reg 0x0 0x3FF");
	}

      if (!hw_tree_find_property (device_tree, "/m68hc12/m68hc12sio@1/reg"))
	{
	  sim_hw_parse (sd, "/m68hc12/m68hc12sio@1/reg 0xC0 0x8");
	  sim_hw_parse (sd, "/m68hc12/m68hc12sio@1/backend stdio");
	  sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12sio@1");
	}
      if (!hw_tree_find_property (device_tree, "/m68hc12/m68hc12sio@2/reg"))
	{
	  sim_hw_parse (sd, "/m68hc12/m68hc12sio@2/reg 0xC8 0x8");
	  sim_hw_parse (sd, "/m68hc12/m68hc12sio@2/backend tcp");
	  sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12sio@2");
	}
      if (hw_tree_find_property (device_tree, "/m68hc12/m68hc12tim/reg") == 0)
	{
	  /* M68hc11 Timer configuration. */
	  sim_hw_parse (sd, "/m68hc12/m68hc12tim/reg 0x1b 0x5");
	  sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12tim");
	}

      /* Create the SPI device.  */
      if (hw_tree_find_property (device_tree, "/m68hc12/m68hc12spi/reg") == 0)
	{
	  sim_hw_parse (sd, "/m68hc12/m68hc12spi/reg 0x28 0x3");
	  sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12spi");
	}
      if (hw_tree_find_property (device_tree, "/m68hc12/nvram/reg") == 0)
	{
	  /* M68hc11 persistent ram configuration. */
	  sim_hw_parse (sd, "/m68hc12/nvram/reg 0x2000 8192");
	  sim_hw_parse (sd, "/m68hc12/nvram/file m68hc12.ram");
	  sim_hw_parse (sd, "/m68hc12/nvram/mode save-modified");
	}
      if (hw_tree_find_property (device_tree, "/m68hc12/m68hc12eepr/reg") == 0)
	{
	  sim_hw_parse (sd, "/m68hc12/m68hc12eepr/reg 0x0800 2048");
	  sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12eepr");
	}
    }
  return 0;
}

static int
sim_prepare_for_program (SIM_DESC sd, struct _bfd* abfd)
{
  sim_cpu *cpu;

  cpu = STATE_CPU (sd, 0);

  sim_hw_configure (sd);
  if (abfd != NULL)
    {
      cpu->cpu_elf_start = bfd_get_start_address (abfd);
    }

  /* reset all state information */
  sim_board_reset (sd);

  return SIM_RC_OK;
}

SIM_DESC
sim_open (SIM_OPEN_KIND kind, host_callback *callback,
          struct _bfd *abfd, char **argv)
{
  char **p;
  SIM_DESC sd;
  sim_cpu *cpu;
  struct hw *device_tree;

  sd = sim_state_alloc (kind, callback);
  cpu = STATE_CPU (sd, 0);

  SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);

  /* for compatibility */
  current_alignment = NONSTRICT_ALIGNMENT;
  current_target_byte_order = BIG_ENDIAN;

  cpu_initialize (sd, cpu);

  cpu->cpu_use_elf_start = 1;
  if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
    {
      free_state (sd);
      return 0;
    }

  /* getopt will print the error message so we just have to exit if this fails.
     FIXME: Hmmm...  in the case of gdb we need getopt to call
     print_filtered.  */
  if (sim_parse_args (sd, argv) != SIM_RC_OK)
    {
      /* Uninstall the modules to avoid memory leaks,
         file descriptor leaks, etc.  */
      free_state (sd);
      return 0;
    }

  /* Check for/establish the a reference program image.  */
  if (sim_analyze_program (sd,
			   (STATE_PROG_ARGV (sd) != NULL
			    ? *STATE_PROG_ARGV (sd)
			    : NULL), abfd) != SIM_RC_OK)
    {
      free_state (sd);
      return 0;
    }

  /* Establish any remaining configuration options.  */
  if (sim_config (sd) != SIM_RC_OK)
    {
      free_state (sd);
      return 0;
    }

  if (sim_post_argv_init (sd) != SIM_RC_OK)
    {
      /* Uninstall the modules to avoid memory leaks,
         file descriptor leaks, etc.  */
      free_state (sd);
      return 0;
    }

  sim_hw_configure (sd);

  /* Fudge our descriptor.  */
  return sd;
}


void
sim_close (SIM_DESC sd, int quitting)
{
  /* shut down modules */
  sim_module_uninstall (sd);

  /* Ensure that any resources allocated through the callback
     mechanism are released: */
  sim_io_shutdown (sd);

  /* FIXME - free SD */
  sim_state_free (sd);
  return;
}

void
sim_set_profile (int n)
{
}

void
sim_set_profile_size (int n)
{
}

/* Generic implementation of sim_engine_run that works within the
   sim_engine setjmp/longjmp framework. */

void
sim_engine_run (SIM_DESC sd,
                int next_cpu_nr,	/* ignore */
		int nr_cpus,	/* ignore */
		int siggnal)	/* ignore */
{
  sim_cpu *cpu;

  SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  cpu = STATE_CPU (sd, 0);
  while (1)
    {
      cpu_single_step (cpu);

      /* process any events */
      if (sim_events_tickn (sd, cpu->cpu_current_cycle))
	{
	  sim_events_process (sd);
	}
    }
}

int
sim_trace (SIM_DESC sd)
{
  sim_resume (sd, 0, 0);
  return 1;
}

void
sim_info (SIM_DESC sd, int verbose)
{
  const char *cpu_type;
  const struct bfd_arch_info *arch;

  /* Nothing to do if there is no verbose flag set.  */
  if (verbose == 0 && STATE_VERBOSE_P (sd) == 0)
    return;

  arch = STATE_ARCHITECTURE (sd);
  if (arch->arch == bfd_arch_m68hc11)
    cpu_type = "68HC11";
  else
    cpu_type = "68HC12";

  sim_io_eprintf (sd, "Simulator info:\n");
  sim_io_eprintf (sd, "  CPU Motorola %s\n", cpu_type);
  sim_get_info (sd, 0);
  sim_module_info (sd, verbose || STATE_VERBOSE_P (sd));
}

SIM_RC
sim_create_inferior (SIM_DESC sd, struct _bfd *abfd,
                     char **argv, char **env)
{
  return sim_prepare_for_program (sd, abfd);
}


void
sim_set_callbacks (host_callback *p)
{
  /*  m6811_callback = p; */
}


int
sim_fetch_register (SIM_DESC sd, int rn, unsigned char *memory, int length)
{
  sim_cpu *cpu;
  uint16 val;

  cpu = STATE_CPU (sd, 0);
  switch (rn)
    {
    case A_REGNUM:
      val = cpu_get_a (cpu);
      break;

    case B_REGNUM:
      val = cpu_get_b (cpu);
      break;

    case D_REGNUM:
      val = cpu_get_d (cpu);
      break;

    case X_REGNUM:
      val = cpu_get_x (cpu);
      break;

    case Y_REGNUM:
      val = cpu_get_y (cpu);
      break;

    case SP_REGNUM:
      val = cpu_get_sp (cpu);
      break;

    case PC_REGNUM:
      val = cpu_get_pc (cpu);
      break;

    case PSW_REGNUM:
      val = cpu_get_ccr (cpu);
      break;

    default:
      val = 0;
      break;
    }
  memory[0] = val >> 8;
  memory[1] = val & 0x0FF;
  return 2;
}

int
sim_store_register (SIM_DESC sd, int rn, unsigned char *memory, int length)
{
  uint16 val;
  sim_cpu *cpu;

  cpu = STATE_CPU (sd, 0);

  val = *memory++;
  if (length == 2)
    val = (val << 8) | *memory;

  switch (rn)
    {
    case D_REGNUM:
      cpu_set_d (cpu, val);
      break;

    case A_REGNUM:
      cpu_set_a (cpu, val);
      break;

    case B_REGNUM:
      cpu_set_b (cpu, val);
      break;

    case X_REGNUM:
      cpu_set_x (cpu, val);
      break;

    case Y_REGNUM:
      cpu_set_y (cpu, val);
      break;

    case SP_REGNUM:
      cpu_set_sp (cpu, val);
      break;

    case PC_REGNUM:
      cpu_set_pc (cpu, val);
      break;

    case PSW_REGNUM:
      cpu_set_ccr (cpu, val);
      break;

    default:
      break;
    }

  return 2;
}

void
sim_size (int s)
{
  ;
}

void
sim_do_command (SIM_DESC sd, char *cmd)
{
  char *mm_cmd = "memory-map";
  char *int_cmd = "interrupt";
  sim_cpu *cpu;

  cpu = STATE_CPU (sd, 0);
  /* Commands available from GDB:   */
  if (sim_args_command (sd, cmd) != SIM_RC_OK)
    {
      if (strncmp (cmd, "info", sizeof ("info") - 1) == 0)
	sim_get_info (sd, &cmd[4]);
      else if (strncmp (cmd, "frame", sizeof ("frame") - 1) == 0)
	cpu_print_frame (sd, STATE_CPU (sd, 0));
      else if (strncmp (cmd, mm_cmd, strlen (mm_cmd) == 0))
	sim_io_eprintf (sd,
			"`memory-map' command replaced by `sim memory'\n");
      else if (strncmp (cmd, int_cmd, strlen (int_cmd)) == 0)
	sim_io_eprintf (sd, "`interrupt' command replaced by `sim watch'\n");
      else
	sim_io_eprintf (sd, "Unknown command `%s'\n", cmd);
    }

  /* If the architecture changed, re-configure.  */
  if (STATE_ARCHITECTURE (sd) != cpu->cpu_configured_arch)
    sim_hw_configure (sd);
}

/* Halt the simulator after just one instruction */

static void
has_stepped (SIM_DESC sd,
	     void *data)
{
  ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_stopped, SIM_SIGTRAP);
}


/* Generic resume - assumes the existance of sim_engine_run */

void
sim_resume (SIM_DESC sd,
	    int step,
	    int siggnal)
{
  sim_engine *engine = STATE_ENGINE (sd);
  jmp_buf buf;
  int jmpval;

  ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);

  /* we only want to be single stepping the simulator once */
  if (engine->stepper != NULL)
    {
      sim_events_deschedule (sd, engine->stepper);
      engine->stepper = NULL;
    }
  sim_module_resume (sd);

  /* run/resume the simulator */
  engine->jmpbuf = &buf;
  jmpval = setjmp (buf);
  if (jmpval == sim_engine_start_jmpval
      || jmpval == sim_engine_restart_jmpval)
    {
      int last_cpu_nr = sim_engine_last_cpu_nr (sd);
      int next_cpu_nr = sim_engine_next_cpu_nr (sd);
      int nr_cpus = sim_engine_nr_cpus (sd);

      sim_events_preprocess (sd, last_cpu_nr >= nr_cpus, next_cpu_nr >= nr_cpus);
      if (next_cpu_nr >= nr_cpus)
	next_cpu_nr = 0;

      /* Only deliver the siggnal ]sic] the first time through - don't
         re-deliver any siggnal during a restart. */
      if (jmpval == sim_engine_restart_jmpval)
	siggnal = 0;

      /* Install the stepping event after having processed some
         pending events.  This is necessary for HC11/HC12 simulator
         because the tick counter is incremented by the number of cycles
         the instruction took.  Some pending ticks to process can still
         be recorded internally by the simulator and sim_events_preprocess
         will handle them.  If the stepping event is inserted before,
         these pending ticks will raise the event and the simulator will
         stop without having executed any instruction.  */
      if (step)
        engine->stepper = sim_events_schedule (sd, 0, has_stepped, sd);

#ifdef SIM_CPU_EXCEPTION_RESUME
      {
	sim_cpu* cpu = STATE_CPU (sd, next_cpu_nr);
	SIM_CPU_EXCEPTION_RESUME(sd, cpu, siggnal);
      }
#endif

      sim_engine_run (sd, next_cpu_nr, nr_cpus, siggnal);
    }
  engine->jmpbuf = NULL;

  sim_module_suspend (sd);
}
Commit	Line	Data
e0709f50	1	/* interp.c -- Simulator for Motorola 68HC11
81e09ed8	2	Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
e0709f50 AC	3	Written by Stephane Carrez (stcarrez@worldnet.fr)
	4
	5	This file is part of GDB, the GNU debugger.
	6
	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)
	10	any later version.
	11
	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.
	16
	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. */
	20
	21	#include "sim-main.h"
	22	#include "sim-assert.h"
	23	#include "sim-hw.h"
	24	#include "sim-options.h"
	25	#include "hw-tree.h"
	26	#include "hw-device.h"
	27	#include "hw-ports.h"
	28
	29	#ifndef MONITOR_BASE
	30	# define MONITOR_BASE (0x0C000)
	31	# define MONITOR_SIZE (0x04000)
	32	#endif
	33
	34	static void sim_get_info (SIM_DESC sd, char *cmd);
	35
	36
	37	char *interrupt_names[] = {
	38	"reset",
	39	"nmi",
	40	"int",
	41	NULL
	42	};
	43
	44	#ifndef INLINE
	45	#if defined(__GNUC__) && defined(__OPTIMIZE__)
	46	#define INLINE __inline__
	47	#else
	48	#define INLINE
	49	#endif
	50	#endif
	51
	52	struct sim_info_list
	53	{
	54	const char *name;
	55	const char *device;
	56	};
	57
81e09ed8	58	struct sim_info_list dev_list_68hc11[] = {
e0709f50 AC	59	{"cpu", "/m68hc11"},
	60	{"timer", "/m68hc11/m68hc11tim"},
	61	{"sio", "/m68hc11/m68hc11sio"},
	62	{"spi", "/m68hc11/m68hc11spi"},
	63	{"eeprom", "/m68hc11/m68hc11eepr"},
	64	{0, 0}
	65	};
	66
81e09ed8 SC	67	struct sim_info_list dev_list_68hc12[] = {
	68	{"cpu", "/m68hc12"},
	69	{"timer", "/m68hc12/m68hc12tim"},
	70	{"sio", "/m68hc12/m68hc12sio"},
	71	{"spi", "/m68hc12/m68hc12spi"},
	72	{"eeprom", "/m68hc12/m68hc12eepr"},
	73	{0, 0}
	74	};
	75
	76	/* Cover function of sim_state_free to free the cpu buffers as well. */
	77
	78	static void
	79	free_state (SIM_DESC sd)
	80	{
	81	if (STATE_MODULES (sd) != NULL)
	82	sim_module_uninstall (sd);
	83
	84	sim_state_free (sd);
	85	}
	86
e0709f50 AC	87	/* Give some information about the simulator. */
	88	static void
	89	sim_get_info (SIM_DESC sd, char *cmd)
	90	{
	91	sim_cpu *cpu;
	92
81e09ed8	93	cpu = STATE_CPU (sd, 0);
e0709f50 AC	94	if (cmd != 0 && (cmd[0] == ' ' \|\| cmd[0] == '-'))
	95	{
	96	int i;
	97	struct hw *hw_dev;
81e09ed8 SC	98	struct sim_info_list *dev_list;
	99	const struct bfd_arch_info *arch;
	100
	101	arch = STATE_ARCHITECTURE (sd);
e0709f50 AC	102	cmd++;
e0709f50 AC	103
81e09ed8 SC	104	if (arch->arch == bfd_arch_m68hc11)
	105	dev_list = dev_list_68hc11;
	106	else
	107	dev_list = dev_list_68hc12;
	108
e0709f50 AC	109	for (i = 0; dev_list[i].name; i++)
	110	if (strcmp (cmd, dev_list[i].name) == 0)
	111	break;
	112
	113	if (dev_list[i].name == 0)
	114	{
	115	sim_io_eprintf (sd, "Device '%s' not found.\n", cmd);
	116	sim_io_eprintf (sd, "Valid devices: cpu timer sio eeprom\n");
	117	return;
	118	}
	119	hw_dev = sim_hw_parse (sd, dev_list[i].device);
	120	if (hw_dev == 0)
	121	{
	122	sim_io_eprintf (sd, "Device '%s' not found\n", dev_list[i].device);
	123	return;
	124	}
	125	hw_ioctl (hw_dev, 23, 0);
	126	return;
	127	}
	128
e0709f50 AC	129	cpu_info (sd, cpu);
	130	interrupts_info (sd, &cpu->cpu_interrupts);
	131	}
	132
	133
	134	void
	135	sim_board_reset (SIM_DESC sd)
	136	{
	137	struct hw *hw_cpu;
	138	sim_cpu *cpu;
81e09ed8 SC	139	const struct bfd_arch_info *arch;
81e09ed8 SC	140	const char *cpu_type;
e0709f50 AC	141
e0709f50 AC	142	cpu = STATE_CPU (sd, 0);
81e09ed8 SC	143	arch = STATE_ARCHITECTURE (sd);
81e09ed8 SC	144
e0709f50	145	/* hw_cpu = sim_hw_parse (sd, "/"); */
81e09ed8 SC	146	if (arch->arch == bfd_arch_m68hc11)
	147	{
	148	cpu->cpu_type = CPU_M6811;
	149	cpu_type = "/m68hc11";
	150	}
	151	else
	152	{
	153	cpu->cpu_type = CPU_M6812;
	154	cpu_type = "/m68hc12";
	155	}
	156
	157	hw_cpu = sim_hw_parse (sd, cpu_type);
e0709f50 AC	158	if (hw_cpu == 0)
e0709f50 AC	159	{
81e09ed8	160	sim_io_eprintf (sd, "%s cpu not found in device tree.", cpu_type);
e0709f50 AC	161	return;
	162	}
	163
	164	cpu_reset (cpu);
	165	hw_port_event (hw_cpu, 3, 0);
	166	cpu_restart (cpu);
	167	}
	168
81e09ed8 SC	169	int
	170	sim_hw_configure (SIM_DESC sd)
	171	{
	172	const struct bfd_arch_info *arch;
	173	struct hw *device_tree;
	174	int m6811_mode;
	175	sim_cpu *cpu;
	176
	177	arch = STATE_ARCHITECTURE (sd);
	178	if (arch == 0)
	179	return 0;
	180
	181	cpu = STATE_CPU (sd, 0);
	182	cpu->cpu_configured_arch = arch;
	183	device_tree = sim_hw_parse (sd, "/");
	184	if (arch->arch == bfd_arch_m68hc11)
	185	{
	186	cpu->cpu_interpretor = cpu_interp_m6811;
	187	if (hw_tree_find_property (device_tree, "/m68hc11/reg") == 0)
	188	{
	189	/* Allocate core managed memory */
	190
	191	/* the monitor */
	192	sim_do_commandf (sd, "memory region 0x%lx@%d,0x%lx",
	193	/* MONITOR_BASE, MONITOR_SIZE */
	194	0x8000, M6811_RAM_LEVEL, 0x8000);
	195	sim_do_commandf (sd, "memory region 0x000@%d,0x8000",
	196	M6811_RAM_LEVEL);
	197	sim_hw_parse (sd, "/m68hc11/reg 0x1000 0x03F");
	198	}
	199
	200	if (hw_tree_find_property (device_tree, "/m68hc11/m68hc11sio/reg") == 0)
	201	{
	202	sim_hw_parse (sd, "/m68hc11/m68hc11sio/reg 0x2b 0x5");
	203	sim_hw_parse (sd, "/m68hc11/m68hc11sio/backend stdio");
	204	sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/m68hc11sio");
	205	}
	206	if (hw_tree_find_property (device_tree, "/m68hc11/m68hc11tim/reg") == 0)
	207	{
	208	/* M68hc11 Timer configuration. */
	209	sim_hw_parse (sd, "/m68hc11/m68hc11tim/reg 0x1b 0x5");
	210	sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/m68hc11tim");
	211	}
	212
	213	/* Create the SPI device. */
	214	if (hw_tree_find_property (device_tree, "/m68hc11/m68hc11spi/reg") == 0)
	215	{
	216	sim_hw_parse (sd, "/m68hc11/m68hc11spi/reg 0x28 0x3");
	217	sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/m68hc11spi");
	218	}
	219	if (hw_tree_find_property (device_tree, "/m68hc11/nvram/reg") == 0)
	220	{
	221	/* M68hc11 persistent ram configuration. */
	222	sim_hw_parse (sd, "/m68hc11/nvram/reg 0x0 256");
	223	sim_hw_parse (sd, "/m68hc11/nvram/file m68hc11.ram");
	224	sim_hw_parse (sd, "/m68hc11/nvram/mode save-modified");
	225	/sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/pram"); /
	226	}
	227	if (hw_tree_find_property (device_tree, "/m68hc11/m68hc11eepr/reg") == 0)
	228	{
	229	sim_hw_parse (sd, "/m68hc11/m68hc11eepr/reg 0xb000 512");
	230	sim_hw_parse (sd, "/m68hc11 > cpu-reset reset /m68hc11/m68hc11eepr");
	231	}
	232	}
233	else
234	{
235	cpu->cpu_interpretor = cpu_interp_m6812;
236	if (hw_tree_find_property (device_tree, "/m68hc12/reg") == 0)
237	{
238	/* Allocate core external memory. */
239	sim_do_commandf (sd, "memory region 0x%lx@%d,0x%lx",
240	0x8000, M6811_RAM_LEVEL, 0x8000);
241	sim_do_commandf (sd, "memory region 0x000@%d,0x8000",
242	M6811_RAM_LEVEL);
243
244	sim_hw_parse (sd, "/m68hc12/reg 0x0 0x3FF");
245	}
246
247	if (!hw_tree_find_property (device_tree, "/m68hc12/m68hc12sio@1/reg"))
248	{
249	sim_hw_parse (sd, "/m68hc12/m68hc12sio@1/reg 0xC0 0x8");
250	sim_hw_parse (sd, "/m68hc12/m68hc12sio@1/backend stdio");
251	sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12sio@1");
252	}
253	if (!hw_tree_find_property (device_tree, "/m68hc12/m68hc12sio@2/reg"))
254	{
255	sim_hw_parse (sd, "/m68hc12/m68hc12sio@2/reg 0xC8 0x8");
256	sim_hw_parse (sd, "/m68hc12/m68hc12sio@2/backend tcp");
257	sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12sio@2");
258	}
259	if (hw_tree_find_property (device_tree, "/m68hc12/m68hc12tim/reg") == 0)
260	{
261	/* M68hc11 Timer configuration. */
262	sim_hw_parse (sd, "/m68hc12/m68hc12tim/reg 0x1b 0x5");
263	sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12tim");
264	}
265
266	/* Create the SPI device. */
267	if (hw_tree_find_property (device_tree, "/m68hc12/m68hc12spi/reg") == 0)
268	{
269	sim_hw_parse (sd, "/m68hc12/m68hc12spi/reg 0x28 0x3");
270	sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12spi");
271	}
272	if (hw_tree_find_property (device_tree, "/m68hc12/nvram/reg") == 0)
273	{
274	/* M68hc11 persistent ram configuration. */
275	sim_hw_parse (sd, "/m68hc12/nvram/reg 0x2000 8192");
276	sim_hw_parse (sd, "/m68hc12/nvram/file m68hc12.ram");
277	sim_hw_parse (sd, "/m68hc12/nvram/mode save-modified");
278	}
279	if (hw_tree_find_property (device_tree, "/m68hc12/m68hc12eepr/reg") == 0)
280	{
281	sim_hw_parse (sd, "/m68hc12/m68hc12eepr/reg 0x0800 2048");
282	sim_hw_parse (sd, "/m68hc12 > cpu-reset reset /m68hc12/m68hc12eepr");
283	}
284	}
285	return 0;
286	}
287
288	static int
289	sim_prepare_for_program (SIM_DESC sd, struct _bfd* abfd)
290	{
291	sim_cpu *cpu;
292
293	cpu = STATE_CPU (sd, 0);
294
295	sim_hw_configure (sd);
296	if (abfd != NULL)
297	{
298	cpu->cpu_elf_start = bfd_get_start_address (abfd);
299	}
300
301	/* reset all state information */
302	sim_board_reset (sd);
303
304	return SIM_RC_OK;
305	}
306
e0709f50 AC	307	SIM_DESC
	308	sim_open (SIM_OPEN_KIND kind, host_callback *callback,
	309	struct _bfd abfd, char *argv)
	310	{
	311	char **p;
	312	SIM_DESC sd;
	313	sim_cpu *cpu;
	314	struct hw *device_tree;
	315
	316	sd = sim_state_alloc (kind, callback);
	317	cpu = STATE_CPU (sd, 0);
	318
	319	SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
	320
	321	/* for compatibility */
	322	current_alignment = NONSTRICT_ALIGNMENT;
	323	current_target_byte_order = BIG_ENDIAN;
	324
	325	cpu_initialize (sd, cpu);
	326
	327	cpu->cpu_use_elf_start = 1;
	328	if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
81e09ed8 SC	329	{
	330	free_state (sd);
	331	return 0;
	332	}
e0709f50 AC	333
	334	/* getopt will print the error message so we just have to exit if this fails.
	335	FIXME: Hmmm... in the case of gdb we need getopt to call
	336	print_filtered. */
	337	if (sim_parse_args (sd, argv) != SIM_RC_OK)
	338	{
	339	/* Uninstall the modules to avoid memory leaks,
	340	file descriptor leaks, etc. */
81e09ed8	341	free_state (sd);
e0709f50 AC	342	return 0;
	343	}
	344
e0709f50 AC	345	/* Check for/establish the a reference program image. */
	346	if (sim_analyze_program (sd,
	347	(STATE_PROG_ARGV (sd) != NULL
	348	? *STATE_PROG_ARGV (sd)
	349	: NULL), abfd) != SIM_RC_OK)
	350	{
81e09ed8	351	free_state (sd);
e0709f50 AC	352	return 0;
	353	}
	354
	355	/* Establish any remaining configuration options. */
	356	if (sim_config (sd) != SIM_RC_OK)
	357	{
81e09ed8	358	free_state (sd);
e0709f50 AC	359	return 0;
	360	}
	361
	362	if (sim_post_argv_init (sd) != SIM_RC_OK)
	363	{
	364	/* Uninstall the modules to avoid memory leaks,
	365	file descriptor leaks, etc. */
81e09ed8	366	free_state (sd);
e0709f50 AC	367	return 0;
	368	}
	369
81e09ed8	370	sim_hw_configure (sd);
e0709f50 AC	371
	372	/* Fudge our descriptor. */
	373	return sd;
	374	}
	375
	376
	377	void
	378	sim_close (SIM_DESC sd, int quitting)
	379	{
	380	/* shut down modules */
	381	sim_module_uninstall (sd);
	382
	383	/* Ensure that any resources allocated through the callback
	384	mechanism are released: */
	385	sim_io_shutdown (sd);
	386
	387	/* FIXME - free SD */
81e09ed8	388	sim_state_free (sd);
e0709f50 AC	389	return;
	390	}
	391
	392	void
	393	sim_set_profile (int n)
	394	{
	395	}
	396
	397	void
	398	sim_set_profile_size (int n)
	399	{
	400	}
	401
	402	/* Generic implementation of sim_engine_run that works within the
	403	sim_engine setjmp/longjmp framework. */
	404
	405	void
	406	sim_engine_run (SIM_DESC sd,
	407	int next_cpu_nr, /* ignore */
	408	int nr_cpus, /* ignore */
	409	int siggnal) /* ignore */
	410	{
	411	sim_cpu *cpu;
	412
	413	SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
	414	cpu = STATE_CPU (sd, 0);
	415	while (1)
	416	{
	417	cpu_single_step (cpu);
	418
	419	/* process any events */
	420	if (sim_events_tickn (sd, cpu->cpu_current_cycle))
	421	{
	422	sim_events_process (sd);
	423	}
	424	}
	425	}
	426
	427	int
	428	sim_trace (SIM_DESC sd)
	429	{
	430	sim_resume (sd, 0, 0);
	431	return 1;
	432	}
	433
	434	void
	435	sim_info (SIM_DESC sd, int verbose)
	436	{
81e09ed8 SC	437	const char *cpu_type;
	438	const struct bfd_arch_info *arch;
	439
00d0c012 SC	440	/* Nothing to do if there is no verbose flag set. */
	441	if (verbose == 0 && STATE_VERBOSE_P (sd) == 0)
	442	return;
	443
81e09ed8 SC	444	arch = STATE_ARCHITECTURE (sd);
	445	if (arch->arch == bfd_arch_m68hc11)
	446	cpu_type = "68HC11";
	447	else
	448	cpu_type = "68HC12";
	449
e0709f50	450	sim_io_eprintf (sd, "Simulator info:\n");
81e09ed8	451	sim_io_eprintf (sd, " CPU Motorola %s\n", cpu_type);
e0709f50 AC	452	sim_get_info (sd, 0);
	453	sim_module_info (sd, verbose \|\| STATE_VERBOSE_P (sd));
	454	}
	455
	456	SIM_RC
	457	sim_create_inferior (SIM_DESC sd, struct _bfd *abfd,
	458	char argv, char env)
	459	{
81e09ed8	460	return sim_prepare_for_program (sd, abfd);
e0709f50 AC	461	}
	462
	463
	464	void
	465	sim_set_callbacks (host_callback *p)
	466	{
	467	/* m6811_callback = p; */
	468	}
	469
	470
	471	int
	472	sim_fetch_register (SIM_DESC sd, int rn, unsigned char *memory, int length)
	473	{
	474	sim_cpu *cpu;
	475	uint16 val;
	476
	477	cpu = STATE_CPU (sd, 0);
	478	switch (rn)
	479	{
	480	case A_REGNUM:
	481	val = cpu_get_a (cpu);
	482	break;
	483
	484	case B_REGNUM:
	485	val = cpu_get_b (cpu);
	486	break;
	487
	488	case D_REGNUM:
	489	val = cpu_get_d (cpu);
	490	break;
	491
	492	case X_REGNUM:
	493	val = cpu_get_x (cpu);
	494	break;
	495
	496	case Y_REGNUM:
	497	val = cpu_get_y (cpu);
	498	break;
	499
	500	case SP_REGNUM:
	501	val = cpu_get_sp (cpu);
	502	break;
	503
	504	case PC_REGNUM:
	505	val = cpu_get_pc (cpu);
	506	break;
	507
	508	case PSW_REGNUM:
	509	val = cpu_get_ccr (cpu);
	510	break;
	511
e0709f50	512	default:
9830501b	513	val = 0;
e0709f50 AC	514	break;
	515	}
	516	memory[0] = val >> 8;
	517	memory[1] = val & 0x0FF;
	518	return 2;
	519	}
	520
	521	int
	522	sim_store_register (SIM_DESC sd, int rn, unsigned char *memory, int length)
	523	{
	524	uint16 val;
	525	sim_cpu *cpu;
	526
	527	cpu = STATE_CPU (sd, 0);
	528
	529	val = *memory++;
	530	if (length == 2)
	531	val = (val << 8) \| *memory;
	532
	533	switch (rn)
	534	{
	535	case D_REGNUM:
	536	cpu_set_d (cpu, val);
	537	break;
	538
	539	case A_REGNUM:
	540	cpu_set_a (cpu, val);
	541	break;
	542
	543	case B_REGNUM:
	544	cpu_set_b (cpu, val);
	545	break;
	546
	547	case X_REGNUM:
	548	cpu_set_x (cpu, val);
	549	break;
	550
	551	case Y_REGNUM:
	552	cpu_set_y (cpu, val);
	553	break;
	554
	555	case SP_REGNUM:
	556	cpu_set_sp (cpu, val);
	557	break;
	558
	559	case PC_REGNUM:
	560	cpu_set_pc (cpu, val);
	561	break;
	562
	563	case PSW_REGNUM:
	564	cpu_set_ccr (cpu, val);
	565	break;
	566
e0709f50	567	default:
e0709f50 AC	568	break;
	569	}
	570
	571	return 2;
	572	}
	573
	574	void
	575	sim_size (int s)
	576	{
	577	;
	578	}
	579
	580	void
	581	sim_do_command (SIM_DESC sd, char *cmd)
	582	{
	583	char *mm_cmd = "memory-map";
	584	char *int_cmd = "interrupt";
81e09ed8	585	sim_cpu *cpu;
e0709f50	586
81e09ed8	587	cpu = STATE_CPU (sd, 0);
e0709f50 AC	588	/* Commands available from GDB: */
	589	if (sim_args_command (sd, cmd) != SIM_RC_OK)
	590	{
	591	if (strncmp (cmd, "info", sizeof ("info") - 1) == 0)
	592	sim_get_info (sd, &cmd[4]);
	593	else if (strncmp (cmd, "frame", sizeof ("frame") - 1) == 0)
	594	cpu_print_frame (sd, STATE_CPU (sd, 0));
	595	else if (strncmp (cmd, mm_cmd, strlen (mm_cmd) == 0))
	596	sim_io_eprintf (sd,
	597	"`memory-map' command replaced by `sim memory'\n");
	598	else if (strncmp (cmd, int_cmd, strlen (int_cmd)) == 0)
	599	sim_io_eprintf (sd, "`interrupt' command replaced by `sim watch'\n");
	600	else
	601	sim_io_eprintf (sd, "Unknown command `%s'\n", cmd);
	602	}
81e09ed8 SC	603
	604	/* If the architecture changed, re-configure. */
	605	if (STATE_ARCHITECTURE (sd) != cpu->cpu_configured_arch)
	606	sim_hw_configure (sd);
e0709f50	607	}
00d0c012 SC	608
	609	/* Halt the simulator after just one instruction */
	610
	611	static void
	612	has_stepped (SIM_DESC sd,
	613	void *data)
	614	{
	615	ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
	616	sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_stopped, SIM_SIGTRAP);
	617	}
	618
	619
	620	/* Generic resume - assumes the existance of sim_engine_run */
	621
	622	void
	623	sim_resume (SIM_DESC sd,
	624	int step,
	625	int siggnal)
	626	{
	627	sim_engine *engine = STATE_ENGINE (sd);
	628	jmp_buf buf;
	629	int jmpval;
	630
	631	ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
	632
	633	/* we only want to be single stepping the simulator once */
	634	if (engine->stepper != NULL)
	635	{
	636	sim_events_deschedule (sd, engine->stepper);
	637	engine->stepper = NULL;
	638	}
	639	sim_module_resume (sd);
	640
	641	/* run/resume the simulator */
	642	engine->jmpbuf = &buf;
	643	jmpval = setjmp (buf);
	644	if (jmpval == sim_engine_start_jmpval
	645	\|\| jmpval == sim_engine_restart_jmpval)
	646	{
	647	int last_cpu_nr = sim_engine_last_cpu_nr (sd);
	648	int next_cpu_nr = sim_engine_next_cpu_nr (sd);
	649	int nr_cpus = sim_engine_nr_cpus (sd);
	650
	651	sim_events_preprocess (sd, last_cpu_nr >= nr_cpus, next_cpu_nr >= nr_cpus);
	652	if (next_cpu_nr >= nr_cpus)
	653	next_cpu_nr = 0;
	654
	655	/* Only deliver the siggnal ]sic] the first time through - don't
	656	re-deliver any siggnal during a restart. */
	657	if (jmpval == sim_engine_restart_jmpval)
	658	siggnal = 0;
	659
	660	/* Install the stepping event after having processed some
	661	pending events. This is necessary for HC11/HC12 simulator
	662	because the tick counter is incremented by the number of cycles
	663	the instruction took. Some pending ticks to process can still
	664	be recorded internally by the simulator and sim_events_preprocess
	665	will handle them. If the stepping event is inserted before,
	666	these pending ticks will raise the event and the simulator will
	667	stop without having executed any instruction. */
	668	if (step)
	669	engine->stepper = sim_events_schedule (sd, 0, has_stepped, sd);
	670
	671	#ifdef SIM_CPU_EXCEPTION_RESUME
672	{
673	sim_cpu* cpu = STATE_CPU (sd, next_cpu_nr);
674	SIM_CPU_EXCEPTION_RESUME(sd, cpu, siggnal);
675	}
676	#endif
677
678	sim_engine_run (sd, next_cpu_nr, nr_cpus, siggnal);
679	}
680	engine->jmpbuf = NULL;
681
682	sim_module_suspend (sd);
683	}