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[/] [or1k/] [trunk/] [gdb-5.0/] [sim/] [mn10200/] [interp.c] - Blame information for rev 1765

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#include <signal.h>
#include "sysdep.h"
#include "bfd.h"
 
#include "mn10200_sim.h"
 
#ifdef NEED_UI_LOOP_HOOK
/* How often to run the ui_loop update, when in use */
#define UI_LOOP_POLL_INTERVAL 0x60000
 
/* Counter for the ui_loop_hook update */
static long ui_loop_hook_counter = UI_LOOP_POLL_INTERVAL;
 
/* Actual hook to call to run through gdb's gui event loop */
extern int (*ui_loop_hook) (int);
#endif /* NEED_UI_LOOP_HOOK */
 
host_callback *mn10200_callback;
int mn10200_debug;
static SIM_OPEN_KIND sim_kind;
static char *myname;
 
static void dispatch PARAMS ((uint32, uint32, int));
static long hash PARAMS ((long));
static void init_system PARAMS ((void));
#define MAX_HASH  127
 
struct hash_entry
{
  struct hash_entry *next;
  long opcode;
  long mask;
  struct simops *ops;
#ifdef HASH_STAT
  unsigned long count;
#endif
};
 
int max_mem = 0;
struct hash_entry hash_table[MAX_HASH+1];
 
 
/* This probably doesn't do a very good job at bucket filling, but
   it's simple... */
static INLINE long
hash(insn)
     long insn;
{
  /* These are one byte insns.  */
  if ((insn & 0xffffff00) == 0x00)
    {
      if ((insn & 0xf0) != 0x80)
        return ((insn & 0xf0) >> 4) & 0x7f;
 
      if ((insn & 0xf0) == 0x80
           && (insn & 0x0c) >> 2 != (insn & 0x03))
        return (insn & 0xf0) & 0x7f;
 
      return (insn & 0xff) & 0x7f;
    }
 
  if ((insn & 0xffff0000) == 0)
    {
      if ((insn & 0xf000) == 0xd000)
        return ((insn & 0xfc00) >> 10) & 0x7f;
 
      if ((insn & 0xf000) == 0xe000)
        return ((insn & 0xff00) >> 8) & 0x7f;
 
      if ((insn & 0xf200) == 0xf200)
        return ((insn & 0xfff0) >> 4) & 0x7f;
 
      if ((insn & 0xc000) == 0x4000
          || (insn & 0xf000) == 0x8000)
        return ((insn & 0xf000) >> 8) & 0x7f;
 
      if ((insn & 0xf200) == 0xf000)
        return ((insn & 0xffc0) >> 8) & 0x7f;
 
      return ((insn & 0xff00) >> 8) & 0x7f;
    }
 
  if ((insn & 0xff000000) == 0)
    {
 
      if ((insn & 0xf00000) != 0xf00000
           || (insn & 0xfc0000) == 0xf80000)
        return ((insn & 0xfc0000) >> 16) & 0x7f;
 
      if ((insn & 0xff0000) == 0xf50000)
        return ((insn & 0xfff000) >> 12) & 0x7f;
      return ((insn & 0xff0000) >> 16) & 0x7f;
    }
 
  return ((insn & 0xfff0000) >> 20) & 0x7f;
}
 
static INLINE void
dispatch (insn, extension, length)
     uint32 insn;
     uint32 extension;
     int length;
{
  struct hash_entry *h;
 
  h = &hash_table[hash(insn)];
 
  while ((insn & h->mask) != h->opcode
          || (length != h->ops->length))
    {
      if (!h->next)
        {
          (*mn10200_callback->printf_filtered) (mn10200_callback,
            "ERROR looking up hash for 0x%x, PC=0x%x\n", insn, PC);
          exit(1);
        }
      h = h->next;
    }
 
 
#ifdef HASH_STAT
  h->count++;
#endif
 
  /* Now call the right function.  */
  (h->ops->func)(insn, extension);
  PC += length;
}
 
/* FIXME These would more efficient to use than load_mem/store_mem,
   but need to be changed to use the memory map.  */
 
uint32
get_word (x)
      uint8 *x;
{
  uint8 *a = x;
  return (a[3]<<24) + (a[2]<<16) + (a[1]<<8) + (a[0]);
}
 
void
put_word (addr, data)
     uint8 *addr;
     uint32 data;
{
  uint8 *a = addr;
  a[0] = data & 0xff;
  a[1] = (data >> 8) & 0xff;
  a[2] = (data >> 16) & 0xff;
  a[3] = (data >> 24) & 0xff;
}
 
void
sim_size (power)
     int power;
 
{
  if (State.mem)
    free (State.mem);
 
  max_mem = 1 << power;
  State.mem = (uint8 *) calloc (1,  1 << power);
  if (!State.mem)
    {
      (*mn10200_callback->printf_filtered) (mn10200_callback, "Allocation of main memory failed.\n");
      exit (1);
    }
}
 
static void
init_system ()
{
  if (!State.mem)
    sim_size(19);
}
 
int
sim_write (sd,addr, buffer, size)
     SIM_DESC sd;
     SIM_ADDR addr;
     unsigned char *buffer;
     int size;
{
  int i;
 
  init_system ();
 
  for (i = 0; i < size; i++)
    store_byte (addr + i, buffer[i]);
 
  return size;
}
 
/* Compare two opcode table entries for qsort.  */
static int
compare_simops (arg1, arg2)
     const PTR arg1;
     const PTR arg2;
{
  unsigned long code1 = ((struct simops *)arg1)->opcode;
  unsigned long code2 = ((struct simops *)arg2)->opcode;
 
  if (code1 < code2)
    return -1;
  if (code2 < code1)
    return 1;
  return 0;
}
 
SIM_DESC
sim_open (kind, cb, abfd, argv)
     SIM_OPEN_KIND kind;
     host_callback *cb;
     struct _bfd *abfd;
     char **argv;
{
  struct simops *s;
  struct hash_entry *h;
  char **p;
  int i;
 
  mn10200_callback = cb;
 
  /* Sort the opcode array from smallest opcode to largest.
     This will generally improve simulator performance as the smaller
     opcodes are generally preferred to the larger opcodes.  */
  for (i = 0, s = Simops; s->func; s++, i++)
    ;
  qsort (Simops, i, sizeof (Simops[0]), compare_simops);
 
  sim_kind = kind;
  myname = argv[0];
 
  for (p = argv + 1; *p; ++p)
    {
      if (strcmp (*p, "-E") == 0)
        ++p; /* ignore endian spec */
      else
#ifdef DEBUG
      if (strcmp (*p, "-t") == 0)
        mn10200_debug = DEBUG;
      else
#endif
        (*mn10200_callback->printf_filtered) (mn10200_callback, "ERROR: unsupported option(s): %s\n",*p);
    }
 
  /* put all the opcodes in the hash table */
  for (s = Simops; s->func; s++)
    {
      h = &hash_table[hash(s->opcode)];
 
      /* go to the last entry in the chain */
      while (h->next)
        {
          /* Don't insert the same opcode more than once.  */
          if (h->opcode == s->opcode
              && h->mask == s->mask
              && h->ops == s)
            break;
          else
            h = h->next;
        }
 
      /* Don't insert the same opcode more than once.  */
      if (h->opcode == s->opcode
          && h->mask == s->mask
          && h->ops == s)
        continue;
 
      if (h->ops)
        {
          h->next = calloc(1,sizeof(struct hash_entry));
          h = h->next;
        }
      h->ops = s;
      h->mask = s->mask;
      h->opcode = s->opcode;
#ifdef HASH_STAT
      h->count = 0;
#endif
    }
 
  /* fudge our descriptor for now */
  return (SIM_DESC) 1;
}
 
 
void
sim_set_profile (n)
     int n;
{
  (*mn10200_callback->printf_filtered) (mn10200_callback, "sim_set_profile %d\n", n);
}
 
void
sim_set_profile_size (n)
     int n;
{
  (*mn10200_callback->printf_filtered) (mn10200_callback, "sim_set_profile_size %d\n", n);
}
 
int
sim_stop (sd)
     SIM_DESC sd;
{
  State.exception = SIGINT;
  return 1;
}
 
void
sim_resume (sd, step, siggnal)
     SIM_DESC sd;
     int step, siggnal;
{
  uint32 inst;
 
  if (step)
    State.exception = SIGTRAP;
  else
    State.exception = 0;
 
  State.exited = 0;
 
  do
    {
      unsigned long insn, extension;
 
#ifdef NEED_UI_LOOP_HOOK
    if (ui_loop_hook != NULL && ui_loop_hook_counter-- < 0)
      {
        ui_loop_hook_counter = UI_LOOP_POLL_INTERVAL;
        ui_loop_hook (0);
      }
#endif /* NEED_UI_LOOP_HOOK */
 
      /* Fetch the current instruction, fetch a double word to
         avoid redundant fetching for the common cases below.  */
      inst = load_mem_big (PC, 2);
 
      /* Using a giant case statement may seem like a waste because of the
         code/rodata size the table itself will consume.  However, using
         a giant case statement speeds up the simulator by 10-15% by avoiding
         cascading if/else statements or cascading case statements.  */
      switch ((inst >> 8) & 0xff)
        {
        /* All the single byte insns except 0x80, which must
           be handled specially.  */
        case 0x00:
        case 0x01:
        case 0x02:
        case 0x03:
        case 0x04:
        case 0x05:
        case 0x06:
        case 0x07:
        case 0x08:
        case 0x09:
        case 0x0a:
        case 0x0b:
        case 0x0c:
        case 0x0d:
        case 0x0e:
        case 0x0f:
        case 0x10:
        case 0x11:
        case 0x12:
        case 0x13:
        case 0x14:
        case 0x15:
        case 0x16:
        case 0x17:
        case 0x18:
        case 0x19:
        case 0x1a:
        case 0x1b:
        case 0x1c:
        case 0x1d:
        case 0x1e:
        case 0x1f:
        case 0x20:
        case 0x21:
        case 0x22:
        case 0x23:
        case 0x24:
        case 0x25:
        case 0x26:
        case 0x27:
        case 0x28:
        case 0x29:
        case 0x2a:
        case 0x2b:
        case 0x2c:
        case 0x2d:
        case 0x2e:
        case 0x2f:
        case 0x30:
        case 0x31:
        case 0x32:
        case 0x33:
        case 0x34:
        case 0x35:
        case 0x36:
        case 0x37:
        case 0x38:
        case 0x39:
        case 0x3a:
        case 0x3b:
        case 0x3c:
        case 0x3d:
        case 0x3e:
        case 0x3f:
        case 0x90:
        case 0x91:
        case 0x92:
        case 0x93:
        case 0x94:
        case 0x95:
        case 0x96:
        case 0x97:
        case 0x98:
        case 0x99:
        case 0x9a:
        case 0x9b:
        case 0x9c:
        case 0x9d:
        case 0x9e:
        case 0x9f:
        case 0xa0:
        case 0xa1:
        case 0xa2:
        case 0xa3:
        case 0xa4:
        case 0xa5:
        case 0xa6:
        case 0xa7:
        case 0xa8:
        case 0xa9:
        case 0xaa:
        case 0xab:
        case 0xac:
        case 0xad:
        case 0xae:
        case 0xaf:
        case 0xb0:
        case 0xb1:
        case 0xb2:
        case 0xb3:
        case 0xb4:
        case 0xb5:
        case 0xb6:
        case 0xb7:
        case 0xb8:
        case 0xb9:
        case 0xba:
        case 0xbb:
        case 0xbc:
        case 0xbd:
        case 0xbe:
        case 0xbf:
        case 0xeb:
        case 0xf6:
        case 0xfe:
        case 0xff:
          insn = (inst >> 8) & 0xff;
          extension = 0;
          dispatch (insn, extension, 1);
          break;
 
        /* Special case as mov dX,dX really means mov imm8,dX.  */
        case 0x80:
        case 0x85:
        case 0x8a:
        case 0x8f:
          /* Fetch the full instruction.  */
          insn = inst;
          extension = 0;
          dispatch (insn, extension, 2);
          break;
 
        case 0x81:
        case 0x82:
        case 0x83:
        case 0x84:
        case 0x86:
        case 0x87:
        case 0x88:
        case 0x89:
        case 0x8b:
        case 0x8c:
        case 0x8d:
        case 0x8e:
          insn = (inst >> 8) & 0xff;
          extension = 0;
          dispatch (insn, extension, 1);
          break;
 
        /* And the two byte insns.  */
        case 0x40:
        case 0x41:
        case 0x42:
        case 0x43:
        case 0x44:
        case 0x45:
        case 0x46:
        case 0x47:
        case 0x48:
        case 0x49:
        case 0x4a:
        case 0x4b:
        case 0x4c:
        case 0x4d:
        case 0x4e:
        case 0x4f:
        case 0x50:
        case 0x51:
        case 0x52:
        case 0x53:
        case 0x54:
        case 0x55:
        case 0x56:
        case 0x57:
        case 0x58:
        case 0x59:
        case 0x5a:
        case 0x5b:
        case 0x5c:
        case 0x5d:
        case 0x5e:
        case 0x5f:
        case 0x60:
        case 0x61:
        case 0x62:
        case 0x63:
        case 0x64:
        case 0x65:
        case 0x66:
        case 0x67:
        case 0x68:
        case 0x69:
        case 0x6a:
        case 0x6b:
        case 0x6c:
        case 0x6d:
        case 0x6e:
        case 0x6f:
        case 0x70:
        case 0x71:
        case 0x72:
        case 0x73:
        case 0x74:
        case 0x75:
        case 0x76:
        case 0x77:
        case 0x78:
        case 0x79:
        case 0x7a:
        case 0x7b:
        case 0x7c:
        case 0x7d:
        case 0x7e:
        case 0x7f:
        case 0xd0:
        case 0xd1:
        case 0xd2:
        case 0xd3:
        case 0xd4:
        case 0xd5:
        case 0xd6:
        case 0xd7:
        case 0xd8:
        case 0xd9:
        case 0xda:
        case 0xdb:
        case 0xe0:
        case 0xe1:
        case 0xe2:
        case 0xe3:
        case 0xe4:
        case 0xe5:
        case 0xe6:
        case 0xe7:
        case 0xe8:
        case 0xe9:
        case 0xea:
        case 0xf0:
        case 0xf1:
        case 0xf2:
        case 0xf3:
          /* Fetch the full instruction.  */
          insn = inst;
          extension = 0;
          dispatch (insn, extension, 2);
          break;
 
        /* And the 3 byte insns with a 16bit operand in little
           endian format.  */
        case 0xc0:
        case 0xc1:
        case 0xc2:
        case 0xc3:
        case 0xc4:
        case 0xc5:
        case 0xc6:
        case 0xc7:
        case 0xc8:
        case 0xc9:
        case 0xca:
        case 0xcb:
        case 0xcc:
        case 0xcd:
        case 0xce:
        case 0xcf:
        case 0xdc:
        case 0xdd:
        case 0xde:
        case 0xdf:
        case 0xec:
        case 0xed:
        case 0xee:
        case 0xef:
        case 0xf8:
        case 0xf9:
        case 0xfa:
        case 0xfb:
        case 0xfc:
        case 0xfd:
          insn = load_byte (PC);
          insn <<= 16;
          insn |= load_half (PC + 1);
          extension = 0;
          dispatch (insn, extension, 3);
          break;
 
        /* 3 byte insns without 16bit operand.  */
        case 0xf5:
          insn = load_mem_big (PC, 3);
          extension = 0;
          dispatch (insn, extension, 3);
          break;
 
        /* 4 byte insns.  */
        case 0xf7:
          insn = inst;
          insn <<= 16;
          insn |= load_half (PC + 2);
          extension = 0;
          dispatch (insn, extension, 4);
          break;
 
        case 0xf4:
          insn = inst;
          insn <<= 16;
          insn |= load_mem_big (PC + 4, 1) << 8;
          insn |= load_mem_big (PC + 3, 1);
          extension = load_mem_big (PC + 2, 1);
          dispatch (insn, extension, 5);
          break;
 
        default:
          abort ();
        }
    }
  while (!State.exception);
 
#ifdef HASH_STAT
  {
    int i;
    for (i = 0; i < MAX_HASH; i++)
      {
        struct hash_entry *h;
        h = &hash_table[i];
 
        printf("hash 0x%x:\n", i);
 
        while (h)
          {
            printf("h->opcode = 0x%x, count = 0x%x\n", h->opcode, h->count);
            h = h->next;
          }
 
        printf("\n\n");
      }
    fflush (stdout);
  }
#endif
 
}
 
 
void
sim_close (sd, quitting)
     SIM_DESC sd;
     int quitting;
{
  /* nothing to do */
}
 
int
sim_trace (sd)
     SIM_DESC sd;
{
#ifdef DEBUG
  mn10200_debug = DEBUG;
#endif
  sim_resume (sd, 0, 0);
  return 1;
}
 
void
sim_info (sd, verbose)
     SIM_DESC sd;
     int verbose;
{
  (*mn10200_callback->printf_filtered) (mn10200_callback, "sim_info\n");
}
 
SIM_RC
sim_create_inferior (sd, abfd, argv, env)
     SIM_DESC sd;
     struct _bfd *abfd;
     char **argv;
     char **env;
{
  if (abfd != NULL)
    PC = bfd_get_start_address (abfd);
  else
    PC = 0;
  return SIM_RC_OK;
}
 
void
sim_set_callbacks (p)
     host_callback *p;
{
  mn10200_callback = p;
}
 
/* All the code for exiting, signals, etc needs to be revamped.
 
   This is enough to get c-torture limping though.  */
 
void
sim_stop_reason (sd, reason, sigrc)
     SIM_DESC sd;
     enum sim_stop *reason;
     int *sigrc;
{
  if (State.exited)
    *reason = sim_exited;
  else
    *reason = sim_stopped;
  if (State.exception == SIGQUIT)
    *sigrc = 0;
  else
    *sigrc = State.exception;
}
 
int
sim_fetch_register (sd, rn, memory, length)
     SIM_DESC sd;
     int rn;
     unsigned char *memory;
     int length;
{
  put_word (memory, State.regs[rn]);
  return -1;
}
 
int
sim_store_register (sd, rn, memory, length)
     SIM_DESC sd;
     int rn;
     unsigned char *memory;
     int length;
{
  State.regs[rn] = get_word (memory);
  return -1;
}
 
int
sim_read (sd, addr, buffer, size)
     SIM_DESC sd;
     SIM_ADDR addr;
     unsigned char *buffer;
     int size;
{
  int i;
  for (i = 0; i < size; i++)
    buffer[i] = load_byte (addr + i);
 
  return size;
}
 
void
sim_do_command (sd, cmd)
     SIM_DESC sd;
     char *cmd;
{
  (*mn10200_callback->printf_filtered) (mn10200_callback, "\"%s\" is not a valid mn10200 simulator command.\n", cmd);
}
 
SIM_RC
sim_load (sd, prog, abfd, from_tty)
     SIM_DESC sd;
     char *prog;
     bfd *abfd;
     int from_tty;
{
  extern bfd *sim_load_file (); /* ??? Don't know where this should live.  */
  bfd *prog_bfd;
 
  prog_bfd = sim_load_file (sd, myname, mn10200_callback, prog, abfd,
                            sim_kind == SIM_OPEN_DEBUG,
                            0, sim_write);
  if (prog_bfd == NULL)
    return SIM_RC_FAIL;
  if (abfd == NULL)
    bfd_close (prog_bfd);
  return SIM_RC_OK;
}

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[/] [or1k/] [trunk/] [gdb-5.0/] [sim/] [mn10200/] [interp.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	106	markom	`#include <signal.h>`
2			`#include "sysdep.h"`
3			`#include "bfd.h"`
4
5			`#include "mn10200_sim.h"`
6
7			`#ifdef NEED_UI_LOOP_HOOK`
8			`/* How often to run the ui_loop update, when in use */`
9			`#define UI_LOOP_POLL_INTERVAL 0x60000`
10
11			`/* Counter for the ui_loop_hook update */`
12			`static long ui_loop_hook_counter = UI_LOOP_POLL_INTERVAL;`
13
14			`/* Actual hook to call to run through gdb's gui event loop */`
15			`extern int (*ui_loop_hook) (int);`
16			`#endif /* NEED_UI_LOOP_HOOK */`
17
18			`host_callback *mn10200_callback;`
19			`int mn10200_debug;`
20			`static SIM_OPEN_KIND sim_kind;`
21			`static char *myname;`
22
23			`static void dispatch PARAMS ((uint32, uint32, int));`
24			`static long hash PARAMS ((long));`
25			`static void init_system PARAMS ((void));`
26			`#define MAX_HASH 127`
27
28			`struct hash_entry`
29			`{`
30			`struct hash_entry *next;`
31			`long opcode;`
32			`long mask;`
33			`struct simops *ops;`
34			`#ifdef HASH_STAT`
35			`unsigned long count;`
36			`#endif`
37			`};`
38
39			`int max_mem = 0;`
40			`struct hash_entry hash_table[MAX_HASH+1];`
41
42
43			`/* This probably doesn't do a very good job at bucket filling, but`
44			`it's simple... */`
45			`static INLINE long`
46			`hash(insn)`
47			`long insn;`
48			`{`
49			`/* These are one byte insns. */`
50			`if ((insn & 0xffffff00) == 0x00)`
51			`{`
52			`if ((insn & 0xf0) != 0x80)`
53			`return ((insn & 0xf0) >> 4) & 0x7f;`
54
55			`if ((insn & 0xf0) == 0x80`
56			`&& (insn & 0x0c) >> 2 != (insn & 0x03))`
57			`return (insn & 0xf0) & 0x7f;`
58
59			`return (insn & 0xff) & 0x7f;`
60			`}`
61
62			`if ((insn & 0xffff0000) == 0)`
63			`{`
64			`if ((insn & 0xf000) == 0xd000)`
65			`return ((insn & 0xfc00) >> 10) & 0x7f;`
66
67			`if ((insn & 0xf000) == 0xe000)`
68			`return ((insn & 0xff00) >> 8) & 0x7f;`
69
70			`if ((insn & 0xf200) == 0xf200)`
71			`return ((insn & 0xfff0) >> 4) & 0x7f;`
72
73			`if ((insn & 0xc000) == 0x4000`
74			`\|\| (insn & 0xf000) == 0x8000)`
75			`return ((insn & 0xf000) >> 8) & 0x7f;`
76
77			`if ((insn & 0xf200) == 0xf000)`
78			`return ((insn & 0xffc0) >> 8) & 0x7f;`
79
80			`return ((insn & 0xff00) >> 8) & 0x7f;`
81			`}`
82
83			`if ((insn & 0xff000000) == 0)`
84			`{`
85
86			`if ((insn & 0xf00000) != 0xf00000`
87			`\|\| (insn & 0xfc0000) == 0xf80000)`
88			`return ((insn & 0xfc0000) >> 16) & 0x7f;`
89
90			`if ((insn & 0xff0000) == 0xf50000)`
91			`return ((insn & 0xfff000) >> 12) & 0x7f;`
92			`return ((insn & 0xff0000) >> 16) & 0x7f;`
93			`}`
94
95			`return ((insn & 0xfff0000) >> 20) & 0x7f;`
96			`}`
97
98			`static INLINE void`
99			`dispatch (insn, extension, length)`
100			`uint32 insn;`
101			`uint32 extension;`
102			`int length;`
103			`{`
104			`struct hash_entry *h;`
105
106			`h = &hash_table[hash(insn)];`
107
108			`while ((insn & h->mask) != h->opcode`
109			`\|\| (length != h->ops->length))`
110			`{`
111			`if (!h->next)`
112			`{`
113			`(*mn10200_callback->printf_filtered) (mn10200_callback,`
114			`"ERROR looking up hash for 0x%x, PC=0x%x\n", insn, PC);`
115			`exit(1);`
116			`}`
117			`h = h->next;`
118			`}`
119
120
121			`#ifdef HASH_STAT`
122			`h->count++;`
123			`#endif`
124
125			`/* Now call the right function. */`
126			`(h->ops->func)(insn, extension);`
127			`PC += length;`
128			`}`
129
130			`/* FIXME These would more efficient to use than load_mem/store_mem,`
131			`but need to be changed to use the memory map. */`
132
133			`uint32`
134			`get_word (x)`
135			`uint8 *x;`
136			`{`
137			`uint8 *a = x;`
138			`return (a[3]<<24) + (a[2]<<16) + (a[1]<<8) + (a[0]);`
139			`}`
140
141			`void`
142			`put_word (addr, data)`
143			`uint8 *addr;`
144			`uint32 data;`
145			`{`
146			`uint8 *a = addr;`
147			`a[0] = data & 0xff;`
148			`a[1] = (data >> 8) & 0xff;`
149			`a[2] = (data >> 16) & 0xff;`
150			`a[3] = (data >> 24) & 0xff;`
151			`}`
152
153			`void`
154			`sim_size (power)`
155			`int power;`
156
157			`{`
158			`if (State.mem)`
159			`free (State.mem);`
160
161			`max_mem = 1 << power;`
162			`State.mem = (uint8 *) calloc (1, 1 << power);`
163			`if (!State.mem)`
164			`{`
165			`(*mn10200_callback->printf_filtered) (mn10200_callback, "Allocation of main memory failed.\n");`
166			`exit (1);`
167			`}`
168			`}`
169
170			`static void`
171			`init_system ()`
172			`{`
173			`if (!State.mem)`
174			`sim_size(19);`
175			`}`
176
177			`int`
178			`sim_write (sd,addr, buffer, size)`
179			`SIM_DESC sd;`
180			`SIM_ADDR addr;`
181			`unsigned char *buffer;`
182			`int size;`
183			`{`
184			`int i;`
185
186			`init_system ();`
187
188			`for (i = 0; i < size; i++)`
189			`store_byte (addr + i, buffer[i]);`
190
191			`return size;`
192			`}`
193
194			`/* Compare two opcode table entries for qsort. */`
195			`static int`
196			`compare_simops (arg1, arg2)`
197			`const PTR arg1;`
198			`const PTR arg2;`
199			`{`
200			`unsigned long code1 = ((struct simops *)arg1)->opcode;`
201			`unsigned long code2 = ((struct simops *)arg2)->opcode;`
202
203			`if (code1 < code2)`
204			`return -1;`
205			`if (code2 < code1)`
206			`return 1;`
207			`return 0;`
208			`}`
209
210			`SIM_DESC`
211			`sim_open (kind, cb, abfd, argv)`
212			`SIM_OPEN_KIND kind;`
213			`host_callback *cb;`
214			`struct _bfd *abfd;`
215			`char **argv;`
216			`{`
217			`struct simops *s;`
218			`struct hash_entry *h;`
219			`char **p;`
220			`int i;`
221
222			`mn10200_callback = cb;`
223
224			`/* Sort the opcode array from smallest opcode to largest.`
225			`This will generally improve simulator performance as the smaller`
226			`opcodes are generally preferred to the larger opcodes. */`
227			`for (i = 0, s = Simops; s->func; s++, i++)`
228			`;`
229			`qsort (Simops, i, sizeof (Simops[0]), compare_simops);`
230
231			`sim_kind = kind;`
232			`myname = argv[0];`
233
234			`for (p = argv + 1; *p; ++p)`
235			`{`
236			`if (strcmp (*p, "-E") == 0)`
237			`++p; /* ignore endian spec */`
238			`else`
239			`#ifdef DEBUG`
240			`if (strcmp (*p, "-t") == 0)`
241			`mn10200_debug = DEBUG;`
242			`else`
243			`#endif`
244			`(mn10200_callback->printf_filtered) (mn10200_callback, "ERROR: unsupported option(s): %s\n",p);`
245			`}`
246
247			`/* put all the opcodes in the hash table */`
248			`for (s = Simops; s->func; s++)`
249			`{`
250			`h = &hash_table[hash(s->opcode)];`
251
252			`/* go to the last entry in the chain */`
253			`while (h->next)`
254			`{`
255			`/* Don't insert the same opcode more than once. */`
256			`if (h->opcode == s->opcode`
257			`&& h->mask == s->mask`
258			`&& h->ops == s)`
259			`break;`
260			`else`
261			`h = h->next;`
262			`}`
263
264			`/* Don't insert the same opcode more than once. */`
265			`if (h->opcode == s->opcode`
266			`&& h->mask == s->mask`
267			`&& h->ops == s)`
268			`continue;`
269
270			`if (h->ops)`
271			`{`
272			`h->next = calloc(1,sizeof(struct hash_entry));`
273			`h = h->next;`
274			`}`
275			`h->ops = s;`
276			`h->mask = s->mask;`
277			`h->opcode = s->opcode;`
278			`#ifdef HASH_STAT`
279			`h->count = 0;`
280			`#endif`
281			`}`
282
283			`/* fudge our descriptor for now */`
284			`return (SIM_DESC) 1;`
285			`}`
286
287
288			`void`
289			`sim_set_profile (n)`
290			`int n;`
291			`{`
292			`(*mn10200_callback->printf_filtered) (mn10200_callback, "sim_set_profile %d\n", n);`
293			`}`
294
295			`void`
296			`sim_set_profile_size (n)`
297			`int n;`
298			`{`
299			`(*mn10200_callback->printf_filtered) (mn10200_callback, "sim_set_profile_size %d\n", n);`
300			`}`
301
302			`int`
303			`sim_stop (sd)`
304			`SIM_DESC sd;`
305			`{`
306			`State.exception = SIGINT;`
307			`return 1;`
308			`}`
309
310			`void`
311			`sim_resume (sd, step, siggnal)`
312			`SIM_DESC sd;`
313			`int step, siggnal;`
314			`{`
315			`uint32 inst;`
316
317			`if (step)`
318			`State.exception = SIGTRAP;`
319			`else`
320			`State.exception = 0;`
321
322			`State.exited = 0;`
323
324			`do`
325			`{`
326			`unsigned long insn, extension;`
327
328			`#ifdef NEED_UI_LOOP_HOOK`
329			`if (ui_loop_hook != NULL && ui_loop_hook_counter-- < 0)`
330			`{`
331			`ui_loop_hook_counter = UI_LOOP_POLL_INTERVAL;`
332			`ui_loop_hook (0);`
333			`}`
334			`#endif /* NEED_UI_LOOP_HOOK */`
335
336			`/* Fetch the current instruction, fetch a double word to`
337			`avoid redundant fetching for the common cases below. */`
338			`inst = load_mem_big (PC, 2);`
339
340			`/* Using a giant case statement may seem like a waste because of the`
341			`code/rodata size the table itself will consume. However, using`
342			`a giant case statement speeds up the simulator by 10-15% by avoiding`
343			`cascading if/else statements or cascading case statements. */`
344			`switch ((inst >> 8) & 0xff)`
345			`{`
346			`/* All the single byte insns except 0x80, which must`
347			`be handled specially. */`
348			`case 0x00:`
349			`case 0x01:`
350			`case 0x02:`
351			`case 0x03:`
352			`case 0x04:`
353			`case 0x05:`
354			`case 0x06:`
355			`case 0x07:`
356			`case 0x08:`
357			`case 0x09:`
358			`case 0x0a:`
359			`case 0x0b:`
360			`case 0x0c:`
361			`case 0x0d:`
362			`case 0x0e:`
363			`case 0x0f:`
364			`case 0x10:`
365			`case 0x11:`
366			`case 0x12:`
367			`case 0x13:`
368			`case 0x14:`
369			`case 0x15:`
370			`case 0x16:`
371			`case 0x17:`
372			`case 0x18:`
373			`case 0x19:`
374			`case 0x1a:`
375			`case 0x1b:`
376			`case 0x1c:`
377			`case 0x1d:`
378			`case 0x1e:`
379			`case 0x1f:`
380			`case 0x20:`
381			`case 0x21:`
382			`case 0x22:`
383			`case 0x23:`
384			`case 0x24:`
385			`case 0x25:`
386			`case 0x26:`
387			`case 0x27:`
388			`case 0x28:`
389			`case 0x29:`
390			`case 0x2a:`
391			`case 0x2b:`
392			`case 0x2c:`
393			`case 0x2d:`
394			`case 0x2e:`
395			`case 0x2f:`
396			`case 0x30:`
397			`case 0x31:`
398			`case 0x32:`
399			`case 0x33:`
400			`case 0x34:`
401			`case 0x35:`
402			`case 0x36:`
403			`case 0x37:`
404			`case 0x38:`
405			`case 0x39:`
406			`case 0x3a:`
407			`case 0x3b:`
408			`case 0x3c:`
409			`case 0x3d:`
410			`case 0x3e:`
411			`case 0x3f:`
412			`case 0x90:`
413			`case 0x91:`
414			`case 0x92:`
415			`case 0x93:`
416			`case 0x94:`
417			`case 0x95:`
418			`case 0x96:`
419			`case 0x97:`
420			`case 0x98:`
421			`case 0x99:`
422			`case 0x9a:`
423			`case 0x9b:`
424			`case 0x9c:`
425			`case 0x9d:`
426			`case 0x9e:`
427			`case 0x9f:`
428			`case 0xa0:`
429			`case 0xa1:`
430			`case 0xa2:`
431			`case 0xa3:`
432			`case 0xa4:`
433			`case 0xa5:`
434			`case 0xa6:`
435			`case 0xa7:`
436			`case 0xa8:`
437			`case 0xa9:`
438			`case 0xaa:`
439			`case 0xab:`
440			`case 0xac:`
441			`case 0xad:`
442			`case 0xae:`
443			`case 0xaf:`
444			`case 0xb0:`
445			`case 0xb1:`
446			`case 0xb2:`
447			`case 0xb3:`
448			`case 0xb4:`
449			`case 0xb5:`
450			`case 0xb6:`
451			`case 0xb7:`
452			`case 0xb8:`
453			`case 0xb9:`
454			`case 0xba:`
455			`case 0xbb:`
456			`case 0xbc:`
457			`case 0xbd:`
458			`case 0xbe:`
459			`case 0xbf:`
460			`case 0xeb:`
461			`case 0xf6:`
462			`case 0xfe:`
463			`case 0xff:`
464			`insn = (inst >> 8) & 0xff;`
465			`extension = 0;`
466			`dispatch (insn, extension, 1);`
467			`break;`
468
469			`/* Special case as mov dX,dX really means mov imm8,dX. */`
470			`case 0x80:`
471			`case 0x85:`
472			`case 0x8a:`
473			`case 0x8f:`
474			`/* Fetch the full instruction. */`
475			`insn = inst;`
476			`extension = 0;`
477			`dispatch (insn, extension, 2);`
478			`break;`
479
480			`case 0x81:`
481			`case 0x82:`
482			`case 0x83:`
483			`case 0x84:`
484			`case 0x86:`
485			`case 0x87:`
486			`case 0x88:`
487			`case 0x89:`
488			`case 0x8b:`
489			`case 0x8c:`
490			`case 0x8d:`
491			`case 0x8e:`
492			`insn = (inst >> 8) & 0xff;`
493			`extension = 0;`
494			`dispatch (insn, extension, 1);`
495			`break;`
496
497			`/* And the two byte insns. */`
498			`case 0x40:`
499			`case 0x41:`
500			`case 0x42:`
501			`case 0x43:`
502			`case 0x44:`
503			`case 0x45:`
504			`case 0x46:`
505			`case 0x47:`
506			`case 0x48:`
507			`case 0x49:`
508			`case 0x4a:`
509			`case 0x4b:`
510			`case 0x4c:`
511			`case 0x4d:`
512			`case 0x4e:`
513			`case 0x4f:`
514			`case 0x50:`
515			`case 0x51:`
516			`case 0x52:`
517			`case 0x53:`
518			`case 0x54:`
519			`case 0x55:`
520			`case 0x56:`
521			`case 0x57:`
522			`case 0x58:`
523			`case 0x59:`
524			`case 0x5a:`
525			`case 0x5b:`
526			`case 0x5c:`
527			`case 0x5d:`
528			`case 0x5e:`
529			`case 0x5f:`
530			`case 0x60:`
531			`case 0x61:`
532			`case 0x62:`
533			`case 0x63:`
534			`case 0x64:`
535			`case 0x65:`
536			`case 0x66:`
537			`case 0x67:`
538			`case 0x68:`
539			`case 0x69:`
540			`case 0x6a:`
541			`case 0x6b:`
542			`case 0x6c:`
543			`case 0x6d:`
544			`case 0x6e:`
545			`case 0x6f:`
546			`case 0x70:`
547			`case 0x71:`
548			`case 0x72:`
549			`case 0x73:`
550			`case 0x74:`
551			`case 0x75:`
552			`case 0x76:`
553			`case 0x77:`
554			`case 0x78:`
555			`case 0x79:`
556			`case 0x7a:`
557			`case 0x7b:`
558			`case 0x7c:`
559			`case 0x7d:`
560			`case 0x7e:`
561			`case 0x7f:`
562			`case 0xd0:`
563			`case 0xd1:`
564			`case 0xd2:`
565			`case 0xd3:`
566			`case 0xd4:`
567			`case 0xd5:`
568			`case 0xd6:`
569			`case 0xd7:`
570			`case 0xd8:`
571			`case 0xd9:`
572			`case 0xda:`
573			`case 0xdb:`
574			`case 0xe0:`
575			`case 0xe1:`
576			`case 0xe2:`
577			`case 0xe3:`
578			`case 0xe4:`
579			`case 0xe5:`
580			`case 0xe6:`
581			`case 0xe7:`
582			`case 0xe8:`
583			`case 0xe9:`
584			`case 0xea:`
585			`case 0xf0:`
586			`case 0xf1:`
587			`case 0xf2:`
588			`case 0xf3:`
589			`/* Fetch the full instruction. */`
590			`insn = inst;`
591			`extension = 0;`
592			`dispatch (insn, extension, 2);`
593			`break;`
594
595			`/* And the 3 byte insns with a 16bit operand in little`
596			`endian format. */`
597			`case 0xc0:`
598			`case 0xc1:`
599			`case 0xc2:`
600			`case 0xc3:`
601			`case 0xc4:`
602			`case 0xc5:`
603			`case 0xc6:`
604			`case 0xc7:`
605			`case 0xc8:`
606			`case 0xc9:`
607			`case 0xca:`
608			`case 0xcb:`
609			`case 0xcc:`
610			`case 0xcd:`
611			`case 0xce:`
612			`case 0xcf:`
613			`case 0xdc:`
614			`case 0xdd:`
615			`case 0xde:`
616			`case 0xdf:`
617			`case 0xec:`
618			`case 0xed:`
619			`case 0xee:`
620			`case 0xef:`
621			`case 0xf8:`
622			`case 0xf9:`
623			`case 0xfa:`
624			`case 0xfb:`
625			`case 0xfc:`
626			`case 0xfd:`
627			`insn = load_byte (PC);`
628			`insn <<= 16;`
629			`insn \|= load_half (PC + 1);`
630			`extension = 0;`
631			`dispatch (insn, extension, 3);`
632			`break;`
633
634			`/* 3 byte insns without 16bit operand. */`
635			`case 0xf5:`
636			`insn = load_mem_big (PC, 3);`
637			`extension = 0;`
638			`dispatch (insn, extension, 3);`
639			`break;`
640
641			`/* 4 byte insns. */`
642			`case 0xf7:`
643			`insn = inst;`
644			`insn <<= 16;`
645			`insn \|= load_half (PC + 2);`
646			`extension = 0;`
647			`dispatch (insn, extension, 4);`
648			`break;`
649
650			`case 0xf4:`
651			`insn = inst;`
652			`insn <<= 16;`
653			`insn \|= load_mem_big (PC + 4, 1) << 8;`
654			`insn \|= load_mem_big (PC + 3, 1);`
655			`extension = load_mem_big (PC + 2, 1);`
656			`dispatch (insn, extension, 5);`
657			`break;`
658
659			`default:`
660			`abort ();`
661			`}`
662			`}`
663			`while (!State.exception);`
664
665			`#ifdef HASH_STAT`
666			`{`
667			`int i;`
668			`for (i = 0; i < MAX_HASH; i++)`
669			`{`
670			`struct hash_entry *h;`
671			`h = &hash_table[i];`
672
673			`printf("hash 0x%x:\n", i);`
674
675			`while (h)`
676			`{`
677			`printf("h->opcode = 0x%x, count = 0x%x\n", h->opcode, h->count);`
678			`h = h->next;`
679			`}`
680
681			`printf("\n\n");`
682			`}`
683			`fflush (stdout);`
684			`}`
685			`#endif`
686
687			`}`
688
689
690			`void`
691			`sim_close (sd, quitting)`
692			`SIM_DESC sd;`
693			`int quitting;`
694			`{`
695			`/* nothing to do */`
696			`}`
697
698			`int`
699			`sim_trace (sd)`
700			`SIM_DESC sd;`
701			`{`
702			`#ifdef DEBUG`
703			`mn10200_debug = DEBUG;`
704			`#endif`
705			`sim_resume (sd, 0, 0);`
706			`return 1;`
707			`}`
708
709			`void`
710			`sim_info (sd, verbose)`
711			`SIM_DESC sd;`
712			`int verbose;`
713			`{`
714			`(*mn10200_callback->printf_filtered) (mn10200_callback, "sim_info\n");`
715			`}`
716
717			`SIM_RC`
718			`sim_create_inferior (sd, abfd, argv, env)`
719			`SIM_DESC sd;`
720			`struct _bfd *abfd;`
721			`char **argv;`
722			`char **env;`
723			`{`
724			`if (abfd != NULL)`
725			`PC = bfd_get_start_address (abfd);`
726			`else`
727			`PC = 0;`
728			`return SIM_RC_OK;`
729			`}`
730
731			`void`
732			`sim_set_callbacks (p)`
733			`host_callback *p;`
734			`{`
735			`mn10200_callback = p;`
736			`}`
737
738			`/* All the code for exiting, signals, etc needs to be revamped.`
739
740			`This is enough to get c-torture limping though. */`
741
742			`void`
743			`sim_stop_reason (sd, reason, sigrc)`
744			`SIM_DESC sd;`
745			`enum sim_stop *reason;`
746			`int *sigrc;`
747			`{`
748			`if (State.exited)`
749			`*reason = sim_exited;`
750			`else`
751			`*reason = sim_stopped;`
752			`if (State.exception == SIGQUIT)`
753			`*sigrc = 0;`
754			`else`
755			`*sigrc = State.exception;`
756			`}`
757
758			`int`
759			`sim_fetch_register (sd, rn, memory, length)`
760			`SIM_DESC sd;`
761			`int rn;`
762			`unsigned char *memory;`
763			`int length;`
764			`{`
765			`put_word (memory, State.regs[rn]);`
766			`return -1;`
767			`}`
768
769			`int`
770			`sim_store_register (sd, rn, memory, length)`
771			`SIM_DESC sd;`
772			`int rn;`
773			`unsigned char *memory;`
774			`int length;`
775			`{`
776			`State.regs[rn] = get_word (memory);`
777			`return -1;`
778			`}`
779
780			`int`
781			`sim_read (sd, addr, buffer, size)`
782			`SIM_DESC sd;`
783			`SIM_ADDR addr;`
784			`unsigned char *buffer;`
785			`int size;`
786			`{`
787			`int i;`
788			`for (i = 0; i < size; i++)`
789			`buffer[i] = load_byte (addr + i);`
790
791			`return size;`
792			`}`
793
794			`void`
795			`sim_do_command (sd, cmd)`
796			`SIM_DESC sd;`
797			`char *cmd;`
798			`{`
799			`(*mn10200_callback->printf_filtered) (mn10200_callback, "\"%s\" is not a valid mn10200 simulator command.\n", cmd);`
800			`}`
801
802			`SIM_RC`
803			`sim_load (sd, prog, abfd, from_tty)`
804			`SIM_DESC sd;`
805			`char *prog;`
806			`bfd *abfd;`
807			`int from_tty;`
808			`{`
809			`extern bfd sim_load_file (); / ??? Don't know where this should live. */`
810			`bfd *prog_bfd;`
811
812			`prog_bfd = sim_load_file (sd, myname, mn10200_callback, prog, abfd,`
813			`sim_kind == SIM_OPEN_DEBUG,`
814			`0, sim_write);`
815			`if (prog_bfd == NULL)`
816			`return SIM_RC_FAIL;`
817			`if (abfd == NULL)`
818			`bfd_close (prog_bfd);`
819			`return SIM_RC_OK;`
820			`}`