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  1. /* Opcode table header for m680[01234]0/m6888[12]/m68851.
  2.    Copyright (C) 1989-2015 Free Software Foundation, Inc.
  3.  
  4.    This file is part of GDB, GAS, and the GNU binutils.
  5.  
  6.    GDB, GAS, and the GNU binutils are free software; you can redistribute
  7.    them and/or modify them under the terms of the GNU General Public
  8.    License as published by the Free Software Foundation; either version 3,
  9.    or (at your option) any later version.
  10.  
  11.    GDB, GAS, and the GNU binutils are distributed in the hope that they
  12.    will be useful, but WITHOUT ANY WARRANTY; without even the implied
  13.    warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  14.    the GNU General Public License for more details.
  15.  
  16.    You should have received a copy of the GNU General Public License
  17.    along with this file; see the file COPYING3.  If not, write to the Free
  18.    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  19.    02110-1301, USA.  */
  20.  
  21. /* These are used as bit flags for the arch field in the m68k_opcode
  22.    structure.  */
  23. #define _m68k_undef  0
  24. #define m68000   0x001
  25. #define m68010   0x002
  26. #define m68020   0x004
  27. #define m68030   0x008
  28. #define m68040   0x010
  29. #define m68060   0x020
  30. #define m68881   0x040
  31. #define m68851   0x080
  32. #define cpu32    0x100          /* e.g., 68332 */
  33. #define fido_a   0x200
  34. #define m68k_mask  0x3ff
  35.  
  36. #define mcfmac   0x400          /* ColdFire MAC. */
  37. #define mcfemac  0x800          /* ColdFire EMAC. */
  38. #define cfloat   0x1000         /* ColdFire FPU.  */
  39. #define mcfhwdiv 0x2000         /* ColdFire hardware divide.  */
  40.  
  41. #define mcfisa_a 0x4000         /* ColdFire ISA_A.  */
  42. #define mcfisa_aa 0x8000        /* ColdFire ISA_A+.  */
  43. #define mcfisa_b 0x10000        /* ColdFire ISA_B.  */
  44. #define mcfisa_c 0x20000        /* ColdFire ISA_C.  */
  45. #define mcfusp   0x40000        /* ColdFire USP instructions.  */
  46. #define mcf_mask 0x7e400
  47.  
  48. /* Handy aliases.  */
  49. #define m68040up   (m68040 | m68060)
  50. #define m68030up   (m68030 | m68040up)
  51. #define m68020up   (m68020 | m68030up)
  52. #define m68010up   (m68010 | cpu32 | fido_a | m68020up)
  53. #define m68000up   (m68000 | m68010up)
  54.  
  55. #define mfloat  (m68881 | m68040 | m68060)
  56. #define mmmu    (m68851 | m68030 | m68040 | m68060)
  57.  
  58. /* The structure used to hold information for an opcode.  */
  59.  
  60. struct m68k_opcode
  61. {
  62.   /* The opcode name.  */
  63.   const char *name;
  64.   /* The pseudo-size of the instruction(in bytes).  Used to determine
  65.      number of bytes necessary to disassemble the instruction.  */
  66.   unsigned int size;
  67.   /* The opcode itself.  */
  68.   unsigned long opcode;
  69.   /* The mask used by the disassembler.  */
  70.   unsigned long match;
  71.   /* The arguments.  */
  72.   const char *args;
  73.   /* The architectures which support this opcode.  */
  74.   unsigned int arch;
  75. };
  76.  
  77. /* The structure used to hold information for an opcode alias.  */
  78.  
  79. struct m68k_opcode_alias
  80. {
  81.   /* The alias name.  */
  82.   const char *alias;
  83.   /* The instruction for which this is an alias.  */
  84.   const char *primary;
  85. };
  86.  
  87. /* We store four bytes of opcode for all opcodes because that is the
  88.    most any of them need.  The actual length of an instruction is
  89.    always at least 2 bytes, and is as much longer as necessary to hold
  90.    the operands it has.
  91.  
  92.    The match field is a mask saying which bits must match particular
  93.    opcode in order for an instruction to be an instance of that
  94.    opcode.
  95.  
  96.    The args field is a string containing two characters for each
  97.    operand of the instruction.  The first specifies the kind of
  98.    operand; the second, the place it is stored.
  99.  
  100.    If the first char of args is '.', it indicates that the opcode is
  101.    two words.  This is only necessary when the match field does not
  102.    have any bits set in the second opcode word.  Such a '.' is skipped
  103.    for operand processing.  */
  104.  
  105. /* Kinds of operands:
  106.    Characters used: AaBbCcDdEeFfGgHIiJjKkLlMmnOopQqRrSsTtUuVvWwXxYyZz01234|*~%;@!&$?/<>#^+-
  107.  
  108.    D  data register only.  Stored as 3 bits.
  109.    A  address register only.  Stored as 3 bits.
  110.    a  address register indirect only.  Stored as 3 bits.
  111.    R  either kind of register.  Stored as 4 bits.
  112.    r  either kind of register indirect only.  Stored as 4 bits.
  113.       At the moment, used only for cas2 instruction.
  114.    F  floating point coprocessor register only.   Stored as 3 bits.
  115.    O  an offset (or width): immediate data 0-31 or data register.
  116.       Stored as 6 bits in special format for BF... insns.
  117.    +  autoincrement only.  Stored as 3 bits (number of the address register).
  118.    -  autodecrement only.  Stored as 3 bits (number of the address register).
  119.    Q  quick immediate data.  Stored as 3 bits.
  120.       This matches an immediate operand only when value is in range 1 .. 8.
  121.    M  moveq immediate data.  Stored as 8 bits.
  122.       This matches an immediate operand only when value is in range -128..127
  123.    T  trap vector immediate data.  Stored as 4 bits.
  124.  
  125.    k  K-factor for fmove.p instruction.   Stored as a 7-bit constant or
  126.       a three bit register offset, depending on the field type.
  127.  
  128.    #  immediate data.  Stored in special places (b, w or l)
  129.       which say how many bits to store.
  130.    ^  immediate data for floating point instructions.   Special places
  131.       are offset by 2 bytes from '#'...
  132.    B  pc-relative address, converted to an offset
  133.       that is treated as immediate data.
  134.    d  displacement and register.  Stores the register as 3 bits
  135.       and stores the displacement in the entire second word.
  136.  
  137.    C  the CCR.  No need to store it; this is just for filtering validity.
  138.    S  the SR.  No need to store, just as with CCR.
  139.    U  the USP.  No need to store, just as with CCR.
  140.    E  the MAC ACC.  No need to store, just as with CCR.
  141.    e  the EMAC ACC[0123].
  142.    G  the MAC/EMAC MACSR.  No need to store, just as with CCR.
  143.    g  the EMAC ACCEXT{01,23}.
  144.    H  the MASK.  No need to store, just as with CCR.
  145.    i  the MAC/EMAC scale factor.
  146.  
  147.    I  Coprocessor ID.   Not printed if 1.   The Coprocessor ID is always
  148.       extracted from the 'd' field of word one, which means that an extended
  149.       coprocessor opcode can be skipped using the 'i' place, if needed.
  150.  
  151.    s  System Control register for the floating point coprocessor.
  152.  
  153.    J  Misc register for movec instruction, stored in 'j' format.
  154.         Possible values:
  155.         0x000   SFC     Source Function Code reg        [60, 40, 30, 20, 10]
  156.         0x001   DFC     Data Function Code reg          [60, 40, 30, 20, 10]
  157.         0x002   CACR    Cache Control Register          [60, 40, 30, 20, mcf]
  158.         0x003   TC      MMU Translation Control         [60, 40]
  159.         0x004   ITT0    Instruction Transparent
  160.                                 Translation reg 0       [60, 40]
  161.         0x005   ITT1    Instruction Transparent
  162.                                 Translation reg 1       [60, 40]
  163.         0x006   DTT0    Data Transparent
  164.                                 Translation reg 0       [60, 40]
  165.         0x007   DTT1    Data Transparent
  166.                                 Translation reg 1       [60, 40]
  167.         0x008   BUSCR   Bus Control Register            [60]
  168.         0x800   USP     User Stack Pointer              [60, 40, 30, 20, 10]
  169.         0x801   VBR     Vector Base reg                 [60, 40, 30, 20, 10, mcf]
  170.         0x802   CAAR    Cache Address Register          [        30, 20]
  171.         0x803   MSP     Master Stack Pointer            [    40, 30, 20]
  172.         0x804   ISP     Interrupt Stack Pointer         [    40, 30, 20]
  173.         0x805   MMUSR   MMU Status reg                  [    40]
  174.         0x806   URP     User Root Pointer               [60, 40]
  175.         0x807   SRP     Supervisor Root Pointer         [60, 40]
  176.         0x808   PCR     Processor Configuration reg     [60]
  177.         0xC00   ROMBAR  ROM Base Address Register       [520X]
  178.         0xC04   RAMBAR0 RAM Base Address Register 0     [520X]
  179.         0xC05   RAMBAR1 RAM Base Address Register 0     [520X]
  180.         0xC0F   MBAR0   RAM Base Address Register 0     [520X]
  181.         0xC04   FLASHBAR FLASH Base Address Register    [mcf528x]
  182.         0xC05   RAMBAR  Static RAM Base Address Register [mcf528x]
  183.  
  184.     L  Register list of the type d0-d7/a0-a7 etc.
  185.        (New!  Improved!  Can also hold fp0-fp7, as well!)
  186.        The assembler tries to see if the registers match the insn by
  187.        looking at where the insn wants them stored.
  188.  
  189.     l  Register list like L, but with all the bits reversed.
  190.        Used for going the other way. . .
  191.  
  192.     c  cache identifier which may be "nc" for no cache, "ic"
  193.        for instruction cache, "dc" for data cache, or "bc"
  194.        for both caches.  Used in cinv and cpush.  Always
  195.        stored in position "d".
  196.  
  197.     u  Any register, with ``upper'' or ``lower'' specification.  Used
  198.        in the mac instructions with size word.
  199.  
  200.  The remainder are all stored as 6 bits using an address mode and a
  201.  register number; they differ in which addressing modes they match.
  202.  
  203.    *  all                                       (modes 0-6,7.0-4)
  204.    ~  alterable memory                          (modes 2-6,7.0,7.1)
  205.                                                 (not 0,1,7.2-4)
  206.    %  alterable                                 (modes 0-6,7.0,7.1)
  207.                                                 (not 7.2-4)
  208.    ;  data                                      (modes 0,2-6,7.0-4)
  209.                                                 (not 1)
  210.    @  data, but not immediate                   (modes 0,2-6,7.0-3)
  211.                                                 (not 1,7.4)
  212.    !  control                                   (modes 2,5,6,7.0-3)
  213.                                                 (not 0,1,3,4,7.4)
  214.    &  alterable control                         (modes 2,5,6,7.0,7.1)
  215.                                                 (not 0,1,3,4,7.2-4)
  216.    $  alterable data                            (modes 0,2-6,7.0,7.1)
  217.                                                 (not 1,7.2-4)
  218.    ?  alterable control, or data register       (modes 0,2,5,6,7.0,7.1)
  219.                                                 (not 1,3,4,7.2-4)
  220.    /  control, or data register                 (modes 0,2,5,6,7.0-3)
  221.                                                 (not 1,3,4,7.4)
  222.    >  *save operands                            (modes 2,4,5,6,7.0,7.1)
  223.                                                 (not 0,1,3,7.2-4)
  224.    <  *restore operands                         (modes 2,3,5,6,7.0-3)
  225.                                                 (not 0,1,4,7.4)
  226.  
  227.    coldfire move operands:
  228.    m                                            (modes 0-4)
  229.    n                                            (modes 5,7.2)
  230.    o                                            (modes 6,7.0,7.1,7.3,7.4)
  231.    p                                            (modes 0-5)
  232.  
  233.    coldfire bset/bclr/btst/mulsl/mulul operands:
  234.    q                                            (modes 0,2-5)
  235.    v                                            (modes 0,2-5,7.0,7.1)
  236.    b                                            (modes 0,2-5,7.2)
  237.    w                                            (modes 2-5,7.2)
  238.    y                                            (modes 2,5)
  239.    z                                            (modes 2,5,7.2)
  240.    x  mov3q immediate operand.
  241.    j  coprocessor ET operand.
  242.    K  coprocessor command number.
  243.    4                                            (modes 2,3,4,5)
  244.   */
  245.  
  246. /* For the 68851:  */
  247. /* I didn't use much imagination in choosing the
  248.    following codes, so many of them aren't very
  249.    mnemonic. -rab
  250.  
  251.    0  32 bit pmmu register
  252.         Possible values:
  253.         000     TC      Translation Control Register (68030, 68851)
  254.  
  255.    1  16 bit pmmu register
  256.         111     AC      Access Control (68851)
  257.  
  258.    2  8 bit pmmu register
  259.         100     CAL     Current Access Level (68851)
  260.         101     VAL     Validate Access Level (68851)
  261.         110     SCC     Stack Change Control (68851)
  262.  
  263.    3  68030-only pmmu registers (32 bit)
  264.         010     TT0     Transparent Translation reg 0
  265.                         (aka Access Control reg 0 -- AC0 -- on 68ec030)
  266.         011     TT1     Transparent Translation reg 1
  267.                         (aka Access Control reg 1 -- AC1 -- on 68ec030)
  268.  
  269.    W  wide pmmu registers
  270.         Possible values:
  271.         001     DRP     Dma Root Pointer (68851)
  272.         010     SRP     Supervisor Root Pointer (68030, 68851)
  273.         011     CRP     Cpu Root Pointer (68030, 68851)
  274.  
  275.    f    function code register (68030, 68851)
  276.         0       SFC
  277.         1       DFC
  278.  
  279.    V    VAL register only (68851)
  280.  
  281.    X    BADx, BACx (16 bit)
  282.         100     BAD     Breakpoint Acknowledge Data (68851)
  283.         101     BAC     Breakpoint Acknowledge Control (68851)
  284.  
  285.    Y    PSR (68851) (MMUSR on 68030) (ACUSR on 68ec030)
  286.    Z    PCSR (68851)
  287.  
  288.    |    memory          (modes 2-6, 7.*)
  289.  
  290.    t  address test level (68030 only)
  291.       Stored as 3 bits, range 0-7.
  292.       Also used for breakpoint instruction now.
  293.  
  294. */
  295.  
  296. /* Places to put an operand, for non-general operands:
  297.    Characters used: BbCcDdFfGgHhIijkLlMmNnostWw123456789/
  298.  
  299.    s  source, low bits of first word.
  300.    d  dest, shifted 9 in first word
  301.    1  second word, shifted 12
  302.    2  second word, shifted 6
  303.    3  second word, shifted 0
  304.    4  third word, shifted 12
  305.    5  third word, shifted 6
  306.    6  third word, shifted 0
  307.    7  second word, shifted 7
  308.    8  second word, shifted 10
  309.    9  second word, shifted 5
  310.    E  second word, shifted 9
  311.    D  store in both place 1 and place 3; for divul and divsl.
  312.    B  first word, low byte, for branch displacements
  313.    W  second word (entire), for branch displacements
  314.    L  second and third words (entire), for branch displacements
  315.       (also overloaded for move16)
  316.    b  second word, low byte
  317.    w  second word (entire) [variable word/long branch offset for dbra]
  318.    W  second word (entire) (must be signed 16 bit value)
  319.    l  second and third word (entire)
  320.    g  variable branch offset for bra and similar instructions.
  321.       The place to store depends on the magnitude of offset.
  322.    t  store in both place 7 and place 8; for floating point operations
  323.    c  branch offset for cpBcc operations.
  324.       The place to store is word two if bit six of word one is zero,
  325.       and words two and three if bit six of word one is one.
  326.    i  Increment by two, to skip over coprocessor extended operands.   Only
  327.       works with the 'I' format.
  328.    k  Dynamic K-factor field.   Bits 6-4 of word 2, used as a register number.
  329.       Also used for dynamic fmovem instruction.
  330.    C  floating point coprocessor constant - 7 bits.  Also used for static
  331.       K-factors...
  332.    j  Movec register #, stored in 12 low bits of second word.
  333.    m  For M[S]ACx; 4 bits split with MSB shifted 6 bits in first word
  334.       and remaining 3 bits of register shifted 9 bits in first word.
  335.       Indicate upper/lower in 1 bit shifted 7 bits in second word.
  336.       Use with `R' or `u' format.
  337.    n  `m' withouth upper/lower indication. (For M[S]ACx; 4 bits split
  338.       with MSB shifted 6 bits in first word and remaining 3 bits of
  339.       register shifted 9 bits in first word.  No upper/lower
  340.       indication is done.)  Use with `R' or `u' format.
  341.    o  For M[S]ACw; 4 bits shifted 12 in second word (like `1').
  342.       Indicate upper/lower in 1 bit shifted 7 bits in second word.
  343.       Use with `R' or `u' format.
  344.    M  For M[S]ACw; 4 bits in low bits of first word.  Indicate
  345.       upper/lower in 1 bit shifted 6 bits in second word.  Use with
  346.       `R' or `u' format.
  347.    N  For M[S]ACw; 4 bits in low bits of second word.  Indicate
  348.       upper/lower in 1 bit shifted 6 bits in second word.  Use with
  349.       `R' or `u' format.
  350.    h  shift indicator (scale factor), 1 bit shifted 10 in second word
  351.  
  352.  Places to put operand, for general operands:
  353.    d  destination, shifted 6 bits in first word
  354.    b  source, at low bit of first word, and immediate uses one byte
  355.    w  source, at low bit of first word, and immediate uses two bytes
  356.    l  source, at low bit of first word, and immediate uses four bytes
  357.    s  source, at low bit of first word.
  358.       Used sometimes in contexts where immediate is not allowed anyway.
  359.    f  single precision float, low bit of 1st word, immediate uses 4 bytes
  360.    F  double precision float, low bit of 1st word, immediate uses 8 bytes
  361.    x  extended precision float, low bit of 1st word, immediate uses 12 bytes
  362.    p  packed float, low bit of 1st word, immediate uses 12 bytes
  363.    G  EMAC accumulator, load  (bit 4 2nd word, !bit8 first word)
  364.    H  EMAC accumulator, non load  (bit 4 2nd word, bit 8 first word)
  365.    F  EMAC ACCx
  366.    f  EMAC ACCy
  367.    I  MAC/EMAC scale factor
  368.    /  Like 's', but set 2nd word, bit 5 if trailing_ampersand set
  369.    ]  first word, bit 10
  370. */
  371.  
  372. extern const struct m68k_opcode m68k_opcodes[];
  373. extern const struct m68k_opcode_alias m68k_opcode_aliases[];
  374.  
  375. extern const int m68k_numopcodes, m68k_numaliases;
  376.  
  377. /* end of m68k-opcode.h */
  378.