include/opcode/v850.h

   1 /* v850.h -- Header file for NEC V850 opcode table
   2    Copyright (C) 1996-2021 Free Software Foundation, Inc.
   3    Written by J.T. Conklin, 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 3,
  10    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 COPYING3.  If not, write to the Free
  19    Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #ifndef V850_H
  23 #define V850_H
  24
  25 #ifdef __cplusplus
  26 extern "C" {
  27 #endif
  28
  29 /* The opcode table is an array of struct v850_opcode.  */
  30
  31 struct v850_opcode
  32 {
  33   /* The opcode name.  */
  34   const char *name;
  35
  36   /* The opcode itself.  Those bits which will be filled in with
  37      operands are zeroes.  */
  38   unsigned long opcode;
  39
  40   /* The opcode mask.  This is used by the disassembler.  This is a
  41      mask containing ones indicating those bits which must match the
  42      opcode field, and zeroes indicating those bits which need not
  43      match (and are presumably filled in by operands).  */
  44   unsigned long mask;
  45
  46   /* An array of operand codes.  Each code is an index into the
  47      operand table.  They appear in the order which the operands must
  48      appear in assembly code, and are terminated by a zero.  */
  49   unsigned char operands[8];
  50
  51   /* Which (if any) operand is a memory operand.  */
  52   unsigned int memop;
  53
  54   /* Target processor(s).  A bit field of processors which support
  55      this instruction.  Note a bit field is used as some instructions
  56      are available on multiple, different processor types, whereas
  57      other instructions are only available on one specific type.  */
  58   unsigned int processors;
  59 };
  60
  61 /* Values for architecture number.  */
  62 #define arch_V850      0
  63 #define arch_V850E     (arch_V850 + 1)
  64 #define arch_V850E1    (arch_V850E + 1)
  65 #define arch_V850E2    (arch_V850E1 + 1)
  66 #define arch_V850E2V3  (arch_V850E2 + 1)
  67 #define arch_V850E3V5  (arch_V850E2V3 + 1)
  68 #define arch_separator (arch_V850E3V5 + 1)
  69
  70 #define opt_EXTENSION  (arch_separator)
  71 #define opt_ALIAS      (opt_EXTENSION + 1)
  72
  73 /* Values for the processors field in the v850_opcode structure.  */
  74 #define PROCESSOR_V850       (1 << (arch_V850))     /* Just the V850.  */
  75 #define PROCESSOR_V850E      (1 << (arch_V850E))    /* Just the V850E.  */
  76 #define PROCESSOR_V850E1     (1 << (arch_V850E1))   /* Just the V850E1.  */
  77 #define PROCESSOR_V850E2     (1 << (arch_V850E2))   /* Just the V850E2.  */
  78 #define PROCESSOR_V850E2V3   (1 << (arch_V850E2V3)) /* Just the V850E2V3.  */
  79 #define PROCESSOR_V850E3V5   (1 << (arch_V850E3V5)) /* Just the V850E3V5.  */
  80
  81 /* UPPERS */
  82 #define PROCESSOR_V850E3V5_UP (PROCESSOR_V850E3V5)
  83 #define PROCESSOR_V850E2V3_UP (PROCESSOR_V850E2V3 | PROCESSOR_V850E3V5_UP)
  84 #define PROCESSOR_V850E2_UP   (PROCESSOR_V850E2   | PROCESSOR_V850E2V3_UP)
  85 #define PROCESSOR_V850E_UP    (PROCESSOR_V850E    | PROCESSOR_V850E1 | PROCESSOR_V850E2_UP)
  86 #define PROCESSOR_ALL         (PROCESSOR_V850     | PROCESSOR_V850E_UP)
  87
  88 #define PROCESSOR_MASK        (PROCESSOR_ALL)
  89 #define PROCESSOR_NOT_V850    (PROCESSOR_ALL & (~ PROCESSOR_V850))         /* Any processor except the V850.  */
  90
  91 #define PROCESSOR_UNKNOWN    ~(PROCESSOR_MASK)
  92
  93 /* OPTIONS */
  94 #define PROCESSOR_OPTION_EXTENSION (1 << (opt_EXTENSION))                  /* Enable extension opcodes.  */
  95 #define PROCESSOR_OPTION_ALIAS     (1 << (opt_ALIAS))                      /* Enable alias opcodes.  */
  96
  97 #define SET_PROCESSOR_MASK(mask,set)    ((mask) = ((mask) & ~PROCESSOR_MASK) | (set))
  98
  99 /* The table itself is sorted by major opcode number, and is otherwise
 100    in the order in which the disassembler should consider
 101    instructions.  */
 102 extern const struct v850_opcode v850_opcodes[];
 103 extern const int v850_num_opcodes;
 104
 105 \f
 106 /* The operands table is an array of struct v850_operand.  */
 107
 108 struct v850_operand
 109 {
 110   /* The number of bits in the operand.  */
 111   /* If this value is -1 then the operand's bits are in a discontinous
 112      distribution in the instruction. */
 113   int bits;
 114
 115   /* (bits >= 0):  How far the operand is left shifted in the instruction.  */
 116   /* (bits == -1): Bit mask of the bits in the operand.  */
 117   int shift;
 118
 119   /* Insertion function.  This is used by the assembler.  To insert an
 120      operand value into an instruction, check this field.
 121
 122      If it is NULL, execute
 123          i |= (op & ((1 << o->bits) - 1)) << o->shift;
 124      (i is the instruction which we are filling in, o is a pointer to
 125      this structure, and op is the opcode value; this assumes twos
 126      complement arithmetic).
 127
 128      If this field is not NULL, then simply call it with the
 129      instruction and the operand value.  It will return the new value
 130      of the instruction.  If the ERRMSG argument is not NULL, then if
 131      the operand value is illegal, *ERRMSG will be set to a warning
 132      string (the operand will be inserted in any case).  If the
 133      operand value is legal, *ERRMSG will be unchanged (most operands
 134      can accept any value).  */
 135   unsigned long (* insert)
 136     (unsigned long instruction, unsigned long op, const char ** errmsg);
 137
 138   /* Extraction function.  This is used by the disassembler.  To
 139      extract this operand type from an instruction, check this field.
 140
 141      If it is NULL, compute
 142          op = o->bits == -1 ? ((i) & o->shift) : ((i) >> o->shift) & ((1 << o->bits) - 1);
 143          if (o->flags & V850_OPERAND_SIGNED)
 144              op = (op << (32 - o->bits)) >> (32 - o->bits);
 145      (i is the instruction, o is a pointer to this structure, and op
 146      is the result; this assumes twos complement arithmetic).
 147
 148      If this field is not NULL, then simply call it with the
 149      instruction value.  It will return the value of the operand.  If
 150      the INVALID argument is not NULL, *INVALID will be set to
 151      non-zero if this operand type can not actually be extracted from
 152      this operand (i.e., the instruction does not match).  If the
 153      operand is valid, *INVALID will not be changed.  */
 154   unsigned long (* extract) (unsigned long instruction, int * invalid);
 155
 156   /* One bit syntax flags.  */
 157   int flags;
 158
 159   int default_reloc;
 160 };
 161
 162 /* Elements in the table are retrieved by indexing with values from
 163    the operands field of the v850_opcodes table.  */
 164
 165 extern const struct v850_operand v850_operands[];
 166
 167 /* Values defined for the flags field of a struct v850_operand.  */
 168
 169 /* This operand names a general purpose register.  */
 170 #define V850_OPERAND_REG        0x01
 171
 172 /* This operand is the ep register.  */
 173 #define V850_OPERAND_EP         0x02
 174
 175 /* This operand names a system register.  */
 176 #define V850_OPERAND_SRG        0x04
 177
 178 /* Prologue eilogue type instruction, V850E specific.  */
 179 #define V850E_OPERAND_REG_LIST  0x08
 180
 181 /* This operand names a condition code used in the setf instruction.  */
 182 #define V850_OPERAND_CC         0x10
 183
 184 #define V850_OPERAND_FLOAT_CC   0x20
 185
 186 /* This operand names a vector purpose register.  */
 187 #define V850_OPERAND_VREG       0x40
 188
 189 /* 16 bit immediate follows instruction, V850E specific.  */
 190 #define V850E_IMMEDIATE16       0x80
 191
 192 /* hi16 bit immediate follows instruction, V850E specific.  */
 193 #define V850E_IMMEDIATE16HI     0x100
 194
 195 /* 23 bit immediate follows instruction, V850E specific.  */
 196 #define V850E_IMMEDIATE23       0x200
 197
 198 /* 32 bit immediate follows instruction, V850E specific.  */
 199 #define V850E_IMMEDIATE32       0x400
 200
 201 /* This is a relaxable operand.   Only used for D9->D22 branch relaxing
 202    right now.  We may need others in the future (or maybe handle them like
 203    promoted operands on the mn10300?).  */
 204 #define V850_OPERAND_RELAX      0x800
 205
 206 /* This operand takes signed values.  */
 207 #define V850_OPERAND_SIGNED     0x1000
 208
 209 /* This operand is a displacement.  */
 210 #define V850_OPERAND_DISP       0x2000
 211
 212 /* This operand is a PC displacement.  */
 213 #define V850_PCREL              0x4000
 214
 215 /* The register specified must be even number.  */
 216 #define V850_REG_EVEN           0x8000
 217
 218 /* The register specified must not be r0.  */
 219 #define V850_NOT_R0             0x20000
 220
 221 /* The register specified must not be 0.  */
 222 #define V850_NOT_IMM0           0x40000
 223
 224 /* The condition code must not be SA CONDITION.  */
 225 #define V850_NOT_SA             0x80000
 226
 227 /* The operand has '!' prefix.  */
 228 #define V850_OPERAND_BANG       0x100000
 229
 230 /* The operand has '%' prefix.  */
 231 #define V850_OPERAND_PERCENT    0x200000
 232
 233 /* This operand is a cache operation.  */
 234 #define V850_OPERAND_CACHEOP    0x400000
 235
 236 /* This operand is a prefetch operation.  */
 237 #define V850_OPERAND_PREFOP     0x800000
 238
 239 /* A PC-relative displacement where a positive value indicates a backwards displacement.  */
 240 #define V850_INVERSE_PCREL      0x1000000
 241
 242 extern int v850_msg_is_out_of_range (const char *);
 243
 244 #ifdef __cplusplus
 245 }
 246 #endif
 247
 248 #endif /* V850_H */