include/opcode/d30v.h

   1 /* d30v.h -- Header file for D30V opcode table
   2    Copyright 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
   3    Written by Martin Hunt (hunt@cygnus.com), Cygnus Solutions
   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 D30V_H
  22 #define D30V_H
  23
  24 #define NOP 0x00F00000
  25
  26 /* Structure to hold information about predefined registers.  */
  27 struct pd_reg
  28 {
  29   char *name;           /* name to recognize */
  30   char *pname;          /* name to print for this register */
  31   int value;
  32 };
  33
  34 extern const struct pd_reg pre_defined_registers[];
  35 int reg_name_cnt PARAMS ((void));
  36
  37 /* the number of control registers */
  38 #define MAX_CONTROL_REG 64
  39
  40 /* define the format specifiers */
  41 #define FM00    0
  42 #define FM01    0x80000000
  43 #define FM10    0x8000000000000000LL
  44 #define FM11    0x8000000080000000LL
  45
  46 /* define the opcode classes */
  47 #define BRA     0
  48 #define LOGIC   1
  49 #define IMEM    2
  50 #define IALU1   4
  51 #define IALU2   5
  52
  53 /* define the execution condition codes */
  54 #define ECC_AL  0       /* ALways (default) */
  55 #define ECC_TX  1       /* F0=True, F1=Don't care */
  56 #define ECC_FX  2       /* F0=False, F1=Don't care */
  57 #define ECC_XT  3       /* F0=Don't care, F1=True */
  58 #define ECC_XF  4       /* F0=Don't care, F1=False */
  59 #define ECC_TT  5       /* F0=True, F1=True */
  60 #define ECC_TF  6       /* F0=True, F1=False */
  61 #define ECC_RESERVED    7       /* reserved */
  62 #define ECC_MAX ECC_RESERVED
  63
  64 extern const char *d30v_ecc_names[];
  65
  66 /* condition code table for CMP and CMPU */
  67 extern const char *d30v_cc_names[];
  68
  69 /* The opcode table is an array of struct d30v_opcode.  */
  70 struct d30v_opcode
  71 {
  72   /* The opcode name.  */
  73   const char *name;
  74
  75   /* the opcode */
  76   int op1;      /* first part, "IALU1" for example */
  77   int op2;      /* the rest of the opcode */
  78
  79   /* opcode format(s).  These numbers correspond to entries */
  80   /* in the d30v_format_table */
  81   unsigned char format[4];
  82
  83 #define SHORT_M         1
  84 #define SHORT_M2        5       /* for ld2w and st2w */
  85 #define SHORT_A         9
  86 #define SHORT_B1        11
  87 #define SHORT_B2        12
  88 #define SHORT_B2r     13
  89 #define SHORT_B3      14
  90 #define SHORT_B3r     16
  91 #define SHORT_B3b     18
  92 #define SHORT_B3br    20
  93 #define SHORT_D1r     22
  94 #define SHORT_D2      24
  95 #define SHORT_D2r     26
  96 #define SHORT_D2Br    28
  97 #define SHORT_U       30      /* unary SHORT_A.  ABS for example */
  98 #define SHORT_F       31      /* SHORT_A with flag registers */
  99 #define SHORT_AF      33      /* SHORT_A with only the first register a flag register */
 100 #define SHORT_T       35      /* for trap instruction */
 101 #define SHORT_A5      36      /* SHORT_A with a 5-bit immediate instead of 6 */
 102 #define SHORT_CMP     38      /* special form for CMPcc */
 103 #define SHORT_CMPU    40      /* special form for CMPUcc */
 104 #define SHORT_A1      42      /* special form of SHORT_A for MACa opcodes where a=1 */
 105 #define SHORT_AA      44      /* SHORT_A with the first register an accumulator */
 106 #define SHORT_RA      46      /* SHORT_A with the second register an accumulator */
 107 #define SHORT_MODINC  48
 108 #define SHORT_MODDEC  49
 109 #define SHORT_C1      50
 110 #define SHORT_C2      51
 111 #define SHORT_UF      52
 112 #define SHORT_A2      53
 113 #define SHORT_NONE    55      /* no operands */
 114 #define SHORT_AR      56      /* like SHORT_AA but only accept register as third parameter  */
 115 #define LONG          57
 116 #define LONG_U        58      /* unary LONG */
 117 #define LONG_Ur       59      /* LONG pc-relative */
 118 #define LONG_CMP      60      /* special form for CMPcc and CMPUcc */
 119 #define LONG_M        61      /* Memory long for ldb, stb */
 120 #define LONG_M2       62      /* Memory long for ld2w, st2w */
 121 #define LONG_2        63      /* LONG with 2 operands; jmptnz */
 122 #define LONG_2r       64      /* LONG with 2 operands; bratnz */
 123 #define LONG_2b       65      /* LONG_2 with modifier of 3 */
 124 #define LONG_2br      66      /* LONG_2r with modifier of 3 */
 125 #define LONG_D        67      /* for DJMPI */
 126 #define LONG_Dr       68      /* for DBRAI */
 127 #define LONG_Dbr      69      /* for repeati */
 128
 129   /* the execution unit(s) used */
 130   int unit;
 131 #define EITHER  0
 132 #define IU      1
 133 #define MU      2
 134 #define EITHER_BUT_PREFER_MU 3
 135
 136   /* this field is used to decide if two instructions */
 137   /* can be executed in parallel */
 138   long flags_used;
 139   long flags_set;
 140 #define FLAG_0          (1L<<0)
 141 #define FLAG_1          (1L<<1)
 142 #define FLAG_2          (1L<<2)
 143 #define FLAG_3          (1L<<3)
 144 #define FLAG_4          (1L<<4)         /* S (saturation) */
 145 #define FLAG_5          (1L<<5)         /* V (overflow) */
 146 #define FLAG_6          (1L<<6)         /* VA (accumulated overflow) */
 147 #define FLAG_7          (1L<<7)         /* C (carry/borrow) */
 148 #define FLAG_SM         (1L<<8)         /* SM (stack mode) */
 149 #define FLAG_RP         (1L<<9)         /* RP (repeat enable) */
 150 #define FLAG_CONTROL    (1L<<10)        /* control registers */
 151 #define FLAG_A0         (1L<<11)        /* A0 */
 152 #define FLAG_A1         (1L<<12)        /* A1 */
 153 #define FLAG_JMP        (1L<<13)        /* instruction is a branch */
 154 #define FLAG_JSR        (1L<<14)        /* subroutine call.  must be aligned */
 155 #define FLAG_MEM        (1L<<15)        /* reads/writes memory */
 156 #define FLAG_NOT_WITH_ADDSUBppp  (1L<<16) /* Old meaning: a 2 word 4 byter operation
 157                                            New meaning: operation cannot be
 158                                            combined in parallel with ADD/SUBppp. */
 159 #define FLAG_MUL16      (1L<<17)        /* 16 bit multiply */
 160 #define FLAG_MUL32      (1L<<18)        /* 32 bit multiply */
 161 #define FLAG_ADDSUBppp  (1L<<19)        /* ADDppp or SUBppp */
 162 #define FLAG_DELAY      (1L<<20)        /* This is a delayed branch or jump */
 163 #define FLAG_LKR        (1L<<21)        /* insn in left slot kills right slot */
 164 #define FLAG_CVVA       (FLAG_5|FLAG_6|FLAG_7)
 165 #define FLAG_C          FLAG_7
 166 #define FLAG_ALL        (FLAG_0 | \
 167                          FLAG_1 | \
 168                          FLAG_2 | \
 169                          FLAG_3 | \
 170                          FLAG_4 | \
 171                          FLAG_5 | \
 172                          FLAG_6 | \
 173                          FLAG_7 | \
 174                          FLAG_SM | \
 175                          FLAG_RP | \
 176                          FLAG_CONTROL)
 177
 178   int reloc_flag;
 179 #define RELOC_PCREL     1
 180 #define RELOC_ABS       2
 181 };
 182
 183 extern const struct d30v_opcode d30v_opcode_table[];
 184 extern const int d30v_num_opcodes;
 185
 186 /* The operands table is an array of struct d30v_operand.  */
 187 struct d30v_operand
 188 {
 189   /* the length of the field */
 190   int length;
 191
 192   /* The number of significant bits in the operand.  */
 193   int bits;
 194
 195   /* position relative to Ra */
 196   int position;
 197
 198   /* syntax flags.  */
 199   long flags;
 200 };
 201 extern const struct d30v_operand d30v_operand_table[];
 202
 203 /* Values defined for the flags field of a struct d30v_operand.  */
 204
 205 /* this is the destination register; it will be modified */
 206 /* this is used by the optimizer */
 207 #define OPERAND_DEST    (1)
 208
 209 /* number or symbol */
 210 #define OPERAND_NUM     (2)
 211
 212 /* address or label */
 213 #define OPERAND_ADDR    (4)
 214
 215 /* register */
 216 #define OPERAND_REG     (8)
 217
 218 /* postincrement +  */
 219 #define OPERAND_PLUS    (0x10)
 220
 221 /* postdecrement -  */
 222 #define OPERAND_MINUS   (0x20)
 223
 224 /* signed number */
 225 #define OPERAND_SIGNED  (0x40)
 226
 227 /* this operand must be shifted left by 3 */
 228 #define OPERAND_SHIFT   (0x80)
 229
 230 /* flag register */
 231 #define OPERAND_FLAG    (0x100)
 232
 233 /* control register  */
 234 #define OPERAND_CONTROL (0x200)
 235
 236 /* accumulator */
 237 #define OPERAND_ACC     (0x400)
 238
 239 /* @  */
 240 #define OPERAND_ATSIGN  (0x800)
 241
 242 /* @(  */
 243 #define OPERAND_ATPAR   (0x1000)
 244
 245 /* predecrement mode '@-sp'  */
 246 #define OPERAND_ATMINUS (0x2000)
 247
 248 /* this operand changes the instruction name */
 249 /* for example, CPMcc, CMPUcc */
 250 #define OPERAND_NAME    (0x4000)
 251
 252 /* fake operand for mvtsys and mvfsys */
 253 #define OPERAND_SPECIAL (0x8000)
 254
 255 /* let the optimizer know that two registers are affected */
 256 #define OPERAND_2REG    (0x10000)
 257
 258 /* This operand is pc-relative.  Note that repeati can have two immediate
 259    operands, one of which is pcrel, the other (the IMM6U one) is not.  */
 260 #define OPERAND_PCREL   (0x20000)
 261
 262 /* The format table is an array of struct d30v_format.  */
 263 struct d30v_format
 264 {
 265   int   form;           /* SHORT_A, LONG, etc */
 266   int   modifier;       /* two bit modifier following opcode */
 267   unsigned char operands[5];
 268 };
 269 extern const struct d30v_format d30v_format_table[];
 270
 271
 272 /* an instruction is defined by an opcode and a format */
 273 /* for example, "add" has one opcode, but three different */
 274 /* formats, 2 SHORT_A forms and a LONG form. */
 275 struct d30v_insn
 276 {
 277   struct d30v_opcode *op;       /* pointer to an entry in the opcode table */
 278   struct d30v_format *form;     /* pointer to an entry in the format table */
 279   int ecc;                      /* execution condition code */
 280 };
 281
 282 /* an expressionS only has one register type, so we fake it */
 283 /* by setting high bits to indicate type */
 284 #define REGISTER_MASK   0xFF
 285
 286 #endif /* D30V_H */