- case 6:
- p = print_indexed (regno, p, addr, stream);
- break;
-
- case 7:
- switch (val & 7)
- {
- case 0:
- val = NEXTWORD (p);
- fprintf_filtered (stream, "@#");
- print_address (val, stream);
- break;
-
- case 1:
- val = NEXTLONG (p);
- fprintf_filtered (stream, "@#");
- print_address (val, stream);
- break;
-
- case 2:
- val = NEXTWORD (p);
- print_address (addr + val, stream);
- break;
-
- case 3:
- p = print_indexed (-1, p, addr, stream);
- break;
-
- case 4:
- flt_p = 1; /* Assume it's a float... */
- switch( place )
- {
- case 'b':
- val = NEXTBYTE (p);
- flt_p = 0;
- break;
-
- case 'w':
- val = NEXTWORD (p);
- flt_p = 0;
- break;
-
- case 'l':
- val = NEXTLONG (p);
- flt_p = 0;
- break;
-
- case 'f':
- flval = NEXTSINGLE(p);
- break;
-
- case 'F':
- flval = NEXTDOUBLE(p);
- break;
-
-#ifdef HAVE_68881
- case 'x':
- ieee_extended_to_double (&ext_format_68881, p, &flval);
- p += 12;
- break;
-#endif
-
- case 'p':
- p += 12;
- flval = 0; /* FIXME, handle packed decimal someday. */
- break;
-
- default:
- error ("Invalid arg format in opcode table: \"%c%c\".",
- *d, place);
- }
- if ( flt_p ) /* Print a float? */
- fprintf_filtered (stream, "#%g", flval);
- else
- fprintf_filtered (stream, "#%d", val);
- break;
-
- default:
- fprintf_filtered (stream, "<invalid address mode 0%o>", val);
- }
- }
- break;
-
- case 'L':
- case 'l':
- if (place == 'w')
- {
- char doneany;
- p1 = buffer + 2;
- val = NEXTWORD (p1);
- /* Move the pointer ahead if this point is farther ahead
- than the last. */
- p = p1 > p ? p1 : p;
- if (val == 0)
- {
- fputs_filtered ("#0", stream);
- break;
- }
- if (*d == 'l')
- {
- register int newval = 0;
- for (regno = 0; regno < 16; ++regno)
- if (val & (0x8000 >> regno))
- newval |= 1 << regno;
- val = newval;
- }
- val &= 0xffff;
- doneany = 0;
- for (regno = 0; regno < 16; ++regno)
- if (val & (1 << regno))
- {
- int first_regno;
- if (doneany)
- fputs_filtered ("/", stream);
- doneany = 1;
- fprintf_filtered (stream, "%s", reg_names[regno]);
- first_regno = regno;
- while (val & (1 << (regno + 1)))
- ++regno;
- if (regno > first_regno)
- fprintf_filtered (stream, "-%s", reg_names[regno]);
- }
- }
- else if (place == '3')
- {
- /* `fmovem' insn. */
- char doneany;
- val = fetch_arg (buffer, place, 8);
- if (val == 0)
- {
- fputs_filtered ("#0", stream);
- break;
- }
- if (*d == 'l')
- {
- register int newval = 0;
- for (regno = 0; regno < 8; ++regno)
- if (val & (0x80 >> regno))
- newval |= 1 << regno;
- val = newval;
- }
- val &= 0xff;
- doneany = 0;
- for (regno = 0; regno < 8; ++regno)
- if (val & (1 << regno))
- {
- int first_regno;
- if (doneany)
- fputs_filtered ("/", stream);
- doneany = 1;
- fprintf_filtered (stream, "fp%d", regno);
- first_regno = regno;
- while (val & (1 << (regno + 1)))
- ++regno;
- if (regno > first_regno)
- fprintf_filtered (stream, "-fp%d", regno);
- }
- }
- else
- goto de_fault;
- break;
-
- default: de_fault:
- error ("Invalid arg format in opcode table: \"%c\".", *d);
- }
-
- return (unsigned char *) p;
-}
-
-/* Fetch BITS bits from a position in the instruction specified by CODE.
- CODE is a "place to put an argument", or 'x' for a destination
- that is a general address (mode and register).
- BUFFER contains the instruction. */
-
-static int
-fetch_arg (buffer, code, bits)
- unsigned char *buffer;
- int code;
- int bits;
-{
- register int val;
- switch (code)
- {
- case 's':
- val = buffer[1];
- break;
-
- case 'd': /* Destination, for register or quick. */
- val = (buffer[0] << 8) + buffer[1];
- val >>= 9;
- break;
-
- case 'x': /* Destination, for general arg */
- val = (buffer[0] << 8) + buffer[1];
- val >>= 6;
- break;
-
- case 'k':
- val = (buffer[3] >> 4);
- break;
-
- case 'C':
- val = buffer[3];
- break;
-
- case '1':
- val = (buffer[2] << 8) + buffer[3];
- val >>= 12;
- break;
-
- case '2':
- val = (buffer[2] << 8) + buffer[3];
- val >>= 6;
- break;
-
- case '3':
- case 'j':
- val = (buffer[2] << 8) + buffer[3];
- break;
-
- case '4':
- val = (buffer[4] << 8) + buffer[5];
- val >>= 12;
- break;
-
- case '5':
- val = (buffer[4] << 8) + buffer[5];
- val >>= 6;
- break;
-
- case '6':
- val = (buffer[4] << 8) + buffer[5];
- break;
-
- case '7':
- val = (buffer[2] << 8) + buffer[3];
- val >>= 7;
- break;
-
- case '8':
- val = (buffer[2] << 8) + buffer[3];
- val >>= 10;
- break;
-
- default:
- abort ();
- }
-
- switch (bits)
- {
- case 3:
- return val & 7;
- case 4:
- return val & 017;
- case 5:
- return val & 037;
- case 6:
- return val & 077;
- case 7:
- return val & 0177;
- case 8:
- return val & 0377;
- case 12:
- return val & 07777;
- default:
- abort ();
- }
-}
-
-/* Print an indexed argument. The base register is BASEREG (-1 for pc).
- P points to extension word, in buffer.
- ADDR is the nominal core address of that extension word. */
-
-static unsigned char *
-print_indexed (basereg, p, addr, stream)
- int basereg;
- unsigned char *p;
- CORE_ADDR addr;
- FILE *stream;
-{
- register int word;
- static char *scales[] = {"", "*2", "*4", "*8"};
- register int base_disp;
- register int outer_disp;
- char buf[40];
-
- word = NEXTWORD (p);
-
- /* Generate the text for the index register.
- Where this will be output is not yet determined. */
- sprintf (buf, "[%s.%c%s]",
- reg_names[(word >> 12) & 0xf],
- (word & 0x800) ? 'l' : 'w',
- scales[(word >> 9) & 3]);
-
- /* Handle the 68000 style of indexing. */
-
- if ((word & 0x100) == 0)
- {
- print_base (basereg,
- ((word & 0x80) ? word | 0xff00 : word & 0xff)
- + ((basereg == -1) ? addr : 0),
- stream);
- fputs_filtered (buf, stream);
- return p;
- }
-
- /* Handle the generalized kind. */
- /* First, compute the displacement to add to the base register. */
-
- if (word & 0200)
- basereg = -2;
- if (word & 0100)
- buf[0] = 0;
- base_disp = 0;
- switch ((word >> 4) & 3)
- {
- case 2:
- base_disp = NEXTWORD (p);
- break;
- case 3:
- base_disp = NEXTLONG (p);
- }
- if (basereg == -1)
- base_disp += addr;
-
- /* Handle single-level case (not indirect) */
-
- if ((word & 7) == 0)
- {
- print_base (basereg, base_disp, stream);
- fputs_filtered (buf, stream);
- return p;
- }
-
- /* Two level. Compute displacement to add after indirection. */
-
- outer_disp = 0;
- switch (word & 3)
- {
- case 2:
- outer_disp = NEXTWORD (p);
- break;
- case 3:
- outer_disp = NEXTLONG (p);
- }
-
- fprintf_filtered (stream, "%d(", outer_disp);
- print_base (basereg, base_disp, stream);
-
- /* If postindexed, print the closeparen before the index. */
- if (word & 4)
- fprintf_filtered (stream, ")%s", buf);
- /* If preindexed, print the closeparen after the index. */
- else
- fprintf_filtered (stream, "%s)", buf);
-
- return p;
-}
-
-/* Print a base register REGNO and displacement DISP, on STREAM.
- REGNO = -1 for pc, -2 for none (suppressed). */
-
-static void
-print_base (regno, disp, stream)
- int regno;
- int disp;
- FILE *stream;
-{
- if (regno == -2)
- fprintf_filtered (stream, "%d", disp);
- else if (regno == -1)
- fprintf_filtered (stream, "0x%x", disp);
- else
- fprintf_filtered (stream, "%d(%s)", disp, reg_names[regno]);