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/* Opcode table header for m680[01234]0/m6888[12]/m68851.

   Copyright 1989, 91, 92, 93, 94, 95, 96, 97, 1999 Free Software Foundation.

This file is part of GDB, GAS, and the GNU binutils.

GDB, GAS, and the GNU binutils are free software; you can redistribute

them and/or modify them under the terms of the GNU General Public

License as published by the Free Software Foundation; either version

1, or (at your option) any later version.

GDB, GAS, and the GNU binutils are distributed in the hope that they

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 file; see the file COPYING.  If not, write to the Free

Software Foundation, 59 Temple Place - Suite 330, Boston, MA

02111-1307, USA.  */

/* These are used as bit flags for the arch field in the m68k_opcode

   structure.  */

#define _m68k_undef  0

#define m68000  0x001

#define m68008  m68000 /* synonym for -m68000.  otherwise unused. */

#define m68010  0x002

#define m68020  0x004

#define m68030  0x008

#define m68ec030 m68030 /* similar enough to -m68030 to ignore differences;

                           gas will deal with the few differences.  */

#define m68040  0x010

/* there is no 68050 */

#define m68060  0x020

#define m68881  0x040

#define m68882  m68881 /* synonym for -m68881.  otherwise unused. */

#define m68851  0x080

#define cpu32   0x100   /* e.g., 68332 */

#define mcf5200 0x200

#define mcf5206e 0x400

#define mcf5307 0x800

 /* handy aliases */

#define m68040up  (m68040 | m68060)

#define m68030up  (m68030 | m68040up)

#define m68020up  (m68020 | m68030up)

#define m68010up  (m68010 | cpu32 | m68020up)

#define m68000up  (m68000 | m68010up)

#define mcf       (mcf5200 | mcf5206e | mcf5307)

#define mfloat  (m68881 | m68882 | m68040 | m68060)

#define mmmu    (m68851 | m68030 | m68040 | m68060)

/* The structure used to hold information for an opcode.  */

struct m68k_opcode

{

  /* The opcode name.  */

  const char *name;

  /* The opcode itself.  */

  unsigned long opcode;

  /* The mask used by the disassembler.  */

  unsigned long match;

  /* The arguments.  */

  const char *args;

  /* The architectures which support this opcode.  */

  unsigned int arch;

};

/* The structure used to hold information for an opcode alias.  */

struct m68k_opcode_alias

{

  /* The alias name.  */

  const char *alias;

  /* The instruction for which this is an alias.  */

  const char *primary;

};

/* We store four bytes of opcode for all opcodes because that is the

   most any of them need.  The actual length of an instruction is

   always at least 2 bytes, and is as much longer as necessary to hold

   the operands it has.

   The match field is a mask saying which bits must match particular

   opcode in order for an instruction to be an instance of that

   opcode.

   The args field is a string containing two characters for each

   operand of the instruction.  The first specifies the kind of

   operand; the second, the place it is stored.  */

/* Kinds of operands:

   Characters used: AaBCcDdEFfGHIJkLlMmnOopQqRrSsTtU VvWXYZ0123|*~%;@!&$?/<>#^+-

   D  data register only.  Stored as 3 bits.

   A  address register only.  Stored as 3 bits.

   a  address register indirect only.  Stored as 3 bits.

   R  either kind of register.  Stored as 4 bits.

   r  either kind of register indirect only.  Stored as 4 bits.

      At the moment, used only for cas2 instruction.

   F  floating point coprocessor register only.   Stored as 3 bits.

   O  an offset (or width): immediate data 0-31 or data register.

      Stored as 6 bits in special format for BF... insns.

   +  autoincrement only.  Stored as 3 bits (number of the address register).

   -  autodecrement only.  Stored as 3 bits (number of the address register).

   Q  quick immediate data.  Stored as 3 bits.

      This matches an immediate operand only when value is in range 1 .. 8.

   M  moveq immediate data.  Stored as 8 bits.

      This matches an immediate operand only when value is in range -128..127

   T  trap vector immediate data.  Stored as 4 bits.

   k  K-factor for fmove.p instruction.   Stored as a 7-bit constant or

      a three bit register offset, depending on the field type.

   #  immediate data.  Stored in special places (b, w or l)

      which say how many bits to store.

   ^  immediate data for floating point instructions.   Special places

      are offset by 2 bytes from '#'...

   B  pc-relative address, converted to an offset

      that is treated as immediate data.

   d  displacement and register.  Stores the register as 3 bits

      and stores the displacement in the entire second word.

   C  the CCR.  No need to store it; this is just for filtering validity.

   S  the SR.  No need to store, just as with CCR.

   U  the USP.  No need to store, just as with CCR.

   E  the ACC.  No need to store, just as with CCR.

   G  the MACSR.  No need to store, just as with CCR.

   H  the MASK.  No need to store, just as with CCR.

   I  Coprocessor ID.   Not printed if 1.   The Coprocessor ID is always

      extracted from the 'd' field of word one, which means that an extended

      coprocessor opcode can be skipped using the 'i' place, if needed.

   s  System Control register for the floating point coprocessor.

   J  Misc register for movec instruction, stored in 'j' format.

        Possible values:

        0x000   SFC     Source Function Code reg        [60, 40, 30, 20, 10]

        0x001   DFC     Data Function Code reg          [60, 40, 30, 20, 10]

        0x002   CACR    Cache Control Register          [60, 40, 30, 20]

        0x003   TC      MMU Translation Control         [60, 40]

        0x004   ITT0    Instruction Transparent

                                Translation reg 0       [60, 40]

        0x005   ITT1    Instruction Transparent

                                Translation reg 1       [60, 40]

        0x006   DTT0    Data Transparent

                                Translation reg 0       [60, 40]

        0x007   DTT1    Data Transparent

                                Translation reg 1       [60, 40]

        0x008   BUSCR   Bus Control Register            [60]

        0x800   USP     User Stack Pointer              [60, 40, 30, 20, 10]

        0x801   VBR     Vector Base reg                 [60, 40, 30, 20, 10]

        0x802   CAAR    Cache Address Register          [        30, 20]

        0x803   MSP     Master Stack Pointer            [    40, 30, 20]

        0x804   ISP     Interrupt Stack Pointer         [    40, 30, 20]

        0x805   MMUSR   MMU Status reg                  [    40]

        0x806   URP     User Root Pointer               [60, 40]

        0x807   SRP     Supervisor Root Pointer         [60, 40]

        0x808   PCR     Processor Configuration reg     [60]

        0xC00   ROMBAR  ROM Base Address Register       [520X]

        0xC04   RAMBAR0 RAM Base Address Register 0     [520X]

        0xC05   RAMBAR1 RAM Base Address Register 0     [520X]

        0xC0F   MBAR0   RAM Base Address Register 0     [520X]

    L  Register list of the type d0-d7/a0-a7 etc.

       (New!  Improved!  Can also hold fp0-fp7, as well!)

       The assembler tries to see if the registers match the insn by

       looking at where the insn wants them stored.

    l  Register list like L, but with all the bits reversed.

       Used for going the other way. . .

    c  cache identifier which may be "nc" for no cache, "ic"

       for instruction cache, "dc" for data cache, or "bc"

       for both caches.  Used in cinv and cpush.  Always

       stored in position "d".

    u  Any register, with ``upper'' or ``lower'' specification.  Used

       in the mac instructions with size word.

 The remainder are all stored as 6 bits using an address mode and a

 register number; they differ in which addressing modes they match.

   *  all                                       (modes 0-6,7.0-4)

   ~  alterable memory                          (modes 2-6,7.0,7.1)

                                                (not 0,1,7.2-4)

   %  alterable                                 (modes 0-6,7.0,7.1)

                                                (not 7.2-4)

   ;  data                                      (modes 0,2-6,7.0-4)

                                                (not 1)

   @  data, but not immediate                   (modes 0,2-6,7.0-3)

                                                (not 1,7.4)

   !  control                                   (modes 2,5,6,7.0-3)

                                                (not 0,1,3,4,7.4)

   &  alterable control                         (modes 2,5,6,7.0,7.1)

                                                (not 0,1,7.2-4)

   $  alterable data                            (modes 0,2-6,7.0,7.1)

                                                (not 1,7.2-4)

   ?  alterable control, or data register       (modes 0,2,5,6,7.0,7.1)

                                                (not 1,3,4,7.2-4)

   /  control, or data register                 (modes 0,2,5,6,7.0-3)

                                                (not 1,3,4,7.4)

   >  *save operands                            (modes 2,4,5,6,7.0,7.1)

                                                (not 0,1,3,7.2-4)

   <  *restore operands                         (modes 2,3,5,6,7.0-3)

                                                (not 0,1,4,7.4)

   coldfire move operands:

   m                                            (modes 0-4)

   n                                            (modes 5,7.2)

   o                                            (modes 6,7.0,7.1,7.3,7.4)

   p                                            (modes 0-5)

   coldfire bset/bclr/btst/mulsl/mulul operands:

   q                                            (modes 0,2-5)

   v                                            (modes 0,2-5,7.0,7.1)

*/

/* For the 68851: */

/*

   I didn't use much imagination in choosing the

   following codes, so many of them aren't very

   mnemonic. -rab

        Possible values:

        000     TC      Translation Control Register (68030, 68851)

   1  16 bit pmmu register

        111     AC      Access Control (68851)

   2  8 bit pmmu register

        100     CAL     Current Access Level (68851)

        101     VAL     Validate Access Level (68851)

        110     SCC     Stack Change Control (68851)

   3  68030-only pmmu registers (32 bit)

        010     TT0     Transparent Translation reg 0

                        (aka Access Control reg 0 -- AC0 -- on 68ec030)

        011     TT1     Transparent Translation reg 1

                        (aka Access Control reg 1 -- AC1 -- on 68ec030)

   W  wide pmmu registers

        Possible values:

        001     DRP     Dma Root Pointer (68851)

        010     SRP     Supervisor Root Pointer (68030, 68851)

        011     CRP     Cpu Root Pointer (68030, 68851)

   f    function code register (68030, 68851)

        1       DFC

   V    VAL register only (68851)

   X    BADx, BACx (16 bit)

        100     BAD     Breakpoint Acknowledge Data (68851)

        101     BAC     Breakpoint Acknowledge Control (68851)

   Y    PSR (68851) (MMUSR on 68030) (ACUSR on 68ec030)

   Z    PCSR (68851)

   |    memory          (modes 2-6, 7.*)

   t  address test level (68030 only)

      Stored as 3 bits, range 0-7.

      Also used for breakpoint instruction now.

*/

/* Places to put an operand, for non-general operands:

   Characters used: BbCcDdghijkLlMmNnostWw123456789

   s  source, low bits of first word.

   d  dest, shifted 9 in first word

   1  second word, shifted 12

   2  second word, shifted 6

   3  second word, shifted 0

   4  third word, shifted 12

   5  third word, shifted 6

   6  third word, shifted 0

   7  second word, shifted 7

   8  second word, shifted 10

   9  second word, shifted 5

   D  store in both place 1 and place 3; for divul and divsl.

   B  first word, low byte, for branch displacements

   W  second word (entire), for branch displacements

   L  second and third words (entire), for branch displacements

      (also overloaded for move16)

   b  second word, low byte

   w  second word (entire) [variable word/long branch offset for dbra]

   W  second word (entire) (must be signed 16 bit value)

   l  second and third word (entire)

   g  variable branch offset for bra and similar instructions.

      The place to store depends on the magnitude of offset.

   t  store in both place 7 and place 8; for floating point operations

   c  branch offset for cpBcc operations.

      The place to store is word two if bit six of word one is zero,

      and words two and three if bit six of word one is one.

   i  Increment by two, to skip over coprocessor extended operands.   Only

      works with the 'I' format.

   k  Dynamic K-factor field.   Bits 6-4 of word 2, used as a register number.

      Also used for dynamic fmovem instruction.

   C  floating point coprocessor constant - 7 bits.  Also used for static

      K-factors...

   j  Movec register #, stored in 12 low bits of second word.

   m  For M[S]ACx; 4 bits split with MSB shifted 6 bits in first word

      and remaining 3 bits of register shifted 9 bits in first word.

      Indicate upper/lower in 1 bit shifted 7 bits in second word.

      Use with `R' or `u' format.

   n  `m' withouth upper/lower indication. (For M[S]ACx; 4 bits split

      with MSB shifted 6 bits in first word and remaining 3 bits of

      register shifted 9 bits in first word.  No upper/lower

      indication is done.)  Use with `R' or `u' format.

   o  For M[S]ACw; 4 bits shifted 12 in second word (like `1').

      Indicate upper/lower in 1 bit shifted 7 bits in second word.

      Use with `R' or `u' format.

   M  For M[S]ACw; 4 bits in low bits of first word.  Indicate

      upper/lower in 1 bit shifted 6 bits in second word.  Use with

      `R' or `u' format.

   N  For M[S]ACw; 4 bits in low bits of second word.  Indicate

      upper/lower in 1 bit shifted 6 bits in second word.  Use with

      `R' or `u' format.

   h  shift indicator (scale factor), 1 bit shifted 10 in second word

 Places to put operand, for general operands:

   d  destination, shifted 6 bits in first word

   b  source, at low bit of first word, and immediate uses one byte

   w  source, at low bit of first word, and immediate uses two bytes

   l  source, at low bit of first word, and immediate uses four bytes

   s  source, at low bit of first word.

      Used sometimes in contexts where immediate is not allowed anyway.

   f  single precision float, low bit of 1st word, immediate uses 4 bytes

   F  double precision float, low bit of 1st word, immediate uses 8 bytes

   x  extended precision float, low bit of 1st word, immediate uses 12 bytes

   p  packed float, low bit of 1st word, immediate uses 12 bytes

*/

extern const struct m68k_opcode m68k_opcodes[];

extern const struct m68k_opcode_alias m68k_opcode_aliases[];

extern const int m68k_numopcodes, m68k_numaliases;

/* end of m68k-opcode.h */