include/opcode/d10v.h

   1 /* d10v.h -- Header file for D10V opcode table
   2    Copyright 1996 Free Software Foundation, Inc.
   3    Written by Martin Hunt (hunt@cygnus.com), Cygnus Support
   4
   5 This file is part of GDB, GAS, and the GNU binutils.
   6
   7 GDB, GAS, and the GNU binutils are free software; you can redistribute
   8 them and/or modify them under the terms of the GNU General Public
   9 License as published by the Free Software Foundation; either version
  10 1, or (at your option) any later version.
  11
  12 GDB, GAS, and the GNU binutils are distributed in the hope that they
  13 will be useful, but WITHOUT ANY WARRANTY; without even the implied
  14 warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  15 the GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this file; see the file COPYING.  If not, write to the Free
  19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef D10V_H
  22 #define D10V_H
  23
  24 /* Format Specifier */
  25 #define FM00    0
  26 #define FM01    0x40000000
  27 #define FM10    0x80000000
  28 #define FM11    0xC0000000
  29
  30 #define NOP 0x5e00
  31 #define OPCODE_DIVS     0x14002800
  32
  33 /* The opcode table is an array of struct d10v_opcode.  */
  34
  35 struct d10v_opcode
  36 {
  37   /* The opcode name.  */
  38   const char *name;
  39
  40   /* the opcode format */
  41   int format;
  42
  43   /* These numbers were picked so we can do if( i & SHORT_OPCODE) */
  44 #define SHORT_OPCODE 1
  45 #define LONG_OPCODE  8
  46 #define SHORT_2      1          /* short with 2 operands */
  47 #define SHORT_B      3          /* short with 8-bit branch */
  48 #define LONG_B       8          /* long with 16-bit branch */
  49 #define LONG_L       10         /* long with 3 operands */
  50 #define LONG_R       12         /* reserved */
  51
  52   /* just a placeholder for variable-length instructions */
  53   /* for example, "bra" will be a fake for "bra.s" and bra.l" */
  54   /* which will immediately follow in the opcode table.  */
  55 #define OPCODE_FAKE  32
  56
  57   /* the number of cycles */
  58   int cycles;
  59
  60   /* the execution unit(s) used */
  61   int unit;
  62 #define EITHER  0
  63 #define IU      1
  64 #define MU      2
  65 #define BOTH    3
  66
  67   /* execution type; parallel or sequential */
  68   int exec_type;
  69 #define PARONLY 1       /* parallel only */
  70 #define SEQ     2       /* must be sequential */
  71 #define PAR     3       /* may be parallel */
  72 #define BRANCH_LINK 4   /* subroutine call.  sequential and aligned */
  73
  74   /* the opcode */
  75   long opcode;
  76
  77   /* mask.  if( (i & mask) == opcode ) then match */
  78   long mask;
  79
  80   /* An array of operand codes.  Each code is an index into the
  81      operand table.  They appear in the order which the operands must
  82      appear in assembly code, and are terminated by a zero.  */
  83   unsigned char operands[6];
  84 };
  85
  86 /* The table itself is sorted by major opcode number, and is otherwise
  87    in the order in which the disassembler should consider
  88    instructions.  */
  89 extern const struct d10v_opcode d10v_opcodes[];
  90 extern const int d10v_num_opcodes;
  91
  92 /* The operands table is an array of struct d10v_operand.  */
  93 struct d10v_operand
  94 {
  95   /* The number of bits in the operand.  */
  96   int bits;
  97
  98   /* How far the operand is left shifted in the instruction.  */
  99   int shift;
 100
 101   /* One bit syntax flags.  */
 102   int flags;
 103 };
 104
 105 /* Elements in the table are retrieved by indexing with values from
 106    the operands field of the d10v_opcodes table.  */
 107
 108 extern const struct d10v_operand d10v_operands[];
 109
 110 /* Values defined for the flags field of a struct d10v_operand.  */
 111
 112 /* the operand must be an even number */
 113 #define OPERAND_EVEN    (1)
 114
 115 /* the operand must be an odd number */
 116 #define OPERAND_ODD     (2)
 117
 118 /* this is the destination register; it will be modified */
 119 /* this is used by the optimizer */
 120 #define OPERAND_DEST    (4)
 121
 122 /* number or symbol */
 123 #define OPERAND_NUM     (8)
 124
 125 /* address or label */
 126 #define OPERAND_ADDR    (0x10)
 127
 128 /* register */
 129 #define OPERAND_REG     (0x20)
 130
 131 /* postincrement +  */
 132 #define OPERAND_PLUS    (0x40)
 133
 134 /* postdecrement -  */
 135 #define OPERAND_MINUS   (0x80)
 136
 137 /* @  */
 138 #define OPERAND_ATSIGN  (0x100)
 139
 140 /* @(  */
 141 #define OPERAND_ATPAR   (0x200)
 142
 143 /* accumulator */
 144 #define OPERAND_ACC     (0x400)
 145
 146 /* flag register */
 147 #define OPERAND_FLAG    (0x800)
 148
 149 /* control register  */
 150 #define OPERAND_CONTROL (0x1000)
 151
 152 /* predecrement mode '@-sp'  */
 153 #define OPERAND_ATMINUS (0x2000)
 154
 155 /* signed number */
 156 #define OPERAND_SIGNED  (0x4000)
 157
 158 /* Structure to hold information about predefined registers.  */
 159 struct pd_reg
 160 {
 161   char *name;           /* name to recognize */
 162   char *pname;          /* name to print for this register */
 163   int value;
 164 };
 165
 166 extern const struct pd_reg pre_defined_registers[];
 167 int reg_name_cnt();
 168
 169 /* an expressionS only has one register type, so we fake it */
 170 /* by setting high bits to indicate type */
 171 #define REGISTER_MASK   0xFF
 172
 173 #endif /* D10V_H */