include/opcode/i370.h

   1 /* i370.h -- Header file for S/390 opcode table
   2    Copyright 1994, 1995, 1998, 1999, 2000 Free Software Foundation, Inc.
   3    PowerPC version written by Ian Lance Taylor, Cygnus Support
   4    Rewritten for i370 ESA/390 support, Linas Vepstas <linas@linas.org>
   5
   6 This file is part of GDB, GAS, and the GNU binutils.
   7
   8 GDB, GAS, and the GNU binutils are free software; you can redistribute
   9 them and/or modify them under the terms of the GNU General Public
  10 License as published by the Free Software Foundation; either version
  11 1, or (at your option) any later version.
  12
  13 GDB, GAS, and the GNU binutils are distributed in the hope that they
  14 will be useful, but WITHOUT ANY WARRANTY; without even the implied
  15 warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  16 the GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this file; see the file COPYING.  If not, write to the Free
  20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  21
  22 #ifndef I370_H
  23 #define I370_H
  24
  25 /* The opcode table is an array of struct i370_opcode.  */
  26 typedef union
  27 {
  28    unsigned int   i[2];
  29    unsigned short s[4];
  30    unsigned char  b[8];
  31 }  i370_insn_t;
  32
  33 struct i370_opcode
  34 {
  35   /* The opcode name.  */
  36   const char *name;
  37
  38   /* the length of the instruction */
  39   char len;
  40
  41   /* The opcode itself.  Those bits which will be filled in with
  42      operands are zeroes.  */
  43   i370_insn_t opcode;
  44
  45   /* The opcode mask.  This is used by the disassembler.  This is a
  46      mask containing ones indicating those bits which must match the
  47      opcode field, and zeroes indicating those bits which need not
  48      match (and are presumably filled in by operands).  */
  49   i370_insn_t mask;
  50
  51   /* One bit flags for the opcode.  These are used to indicate which
  52      specific processors support the instructions.  The defined values
  53      are listed below.  */
  54   unsigned long flags;
  55
  56   /* An array of operand codes.  Each code is an index into the
  57      operand table.  They appear in the order which the operands must
  58      appear in assembly code, and are terminated by a zero.  */
  59   unsigned char operands[8];
  60 };
  61
  62 /* The table itself is sorted by major opcode number, and is otherwise
  63    in the order in which the disassembler should consider
  64    instructions.  */
  65 extern const struct i370_opcode i370_opcodes[];
  66 extern const int i370_num_opcodes;
  67
  68 /* Values defined for the flags field of a struct i370_opcode.  */
  69
  70 /* Opcode is defined for the original 360 architecture.  */
  71 #define I370_OPCODE_360 (0x01)
  72
  73 /* Opcode is defined for the 370 architecture.  */
  74 #define I370_OPCODE_370 (0x02)
  75
  76 /* Opcode is defined for the 370-XA architecture.  */
  77 #define I370_OPCODE_370_XA (0x04)
  78
  79 /* Opcode is defined for the ESA/370 architecture.  */
  80 #define I370_OPCODE_ESA370 (0x08)
  81
  82 /* Opcode is defined for the ESA/390 architecture.  */
  83 #define I370_OPCODE_ESA390 (0x10)
  84
  85 /* Opcode is defined for the ESA/390 w/ BFP facility.  */
  86 #define I370_OPCODE_ESA390_BF (0x20)
  87
  88 /* Opcode is defined for the ESA/390 w/ branch & set authority facility.  */
  89 #define I370_OPCODE_ESA390_BS (0x40)
  90
  91 /* Opcode is defined for the ESA/390 w/ checksum facility.  */
  92 #define I370_OPCODE_ESA390_CK (0x80)
  93
  94 /* Opcode is defined for the ESA/390 w/ compare & move extended facility.  */
  95 #define I370_OPCODE_ESA390_CM (0x100)
  96
  97 /* Opcode is defined for the ESA/390 w/ flt.pt. support extensions facility. */
  98 #define I370_OPCODE_ESA390_FX (0x200)
  99
 100 /* Opcode is defined for the ESA/390 w/ HFP facility. */
 101 #define I370_OPCODE_ESA390_HX (0x400)
 102
 103 /* Opcode is defined for the ESA/390 w/ immediate & relative facility.  */
 104 #define I370_OPCODE_ESA390_IR (0x800)
 105
 106 /* Opcode is defined for the ESA/390 w/ move-inverse facility.  */
 107 #define I370_OPCODE_ESA390_MI (0x1000)
 108
 109 /* Opcode is defined for the ESA/390 w/ program-call-fast facility.  */
 110 #define I370_OPCODE_ESA390_PC (0x2000)
 111
 112 /* Opcode is defined for the ESA/390 w/ perform-locked-op facility.  */
 113 #define I370_OPCODE_ESA390_PL (0x4000)
 114
 115 /* Opcode is defined for the ESA/390 w/ square-root facility.  */
 116 #define I370_OPCODE_ESA390_QR (0x8000)
 117
 118 /* Opcode is defined for the ESA/390 w/ resume-program facility.  */
 119 #define I370_OPCODE_ESA390_RP (0x10000)
 120
 121 /* Opcode is defined for the ESA/390 w/ set-address-space-fast facility.  */
 122 #define I370_OPCODE_ESA390_SA (0x20000)
 123
 124 /* Opcode is defined for the ESA/390 w/ subspace group facility.  */
 125 #define I370_OPCODE_ESA390_SG (0x40000)
 126
 127 /* Opcode is defined for the ESA/390 w/ string facility.  */
 128 #define I370_OPCODE_ESA390_SR (0x80000)
 129
 130 /* Opcode is defined for the ESA/390 w/ trap facility.  */
 131 #define I370_OPCODE_ESA390_TR (0x100000)
 132
 133 #define I370_OPCODE_ESA390_SUPERSET (0x1fffff)
 134
 135 \f
 136 /* The operands table is an array of struct i370_operand.  */
 137
 138 struct i370_operand
 139 {
 140   /* The number of bits in the operand.  */
 141   int bits;
 142
 143   /* How far the operand is left shifted in the instruction.  */
 144   int shift;
 145
 146   /* Insertion function.  This is used by the assembler.  To insert an
 147      operand value into an instruction, check this field.
 148
 149      If it is NULL, execute
 150          i |= (op & ((1 << o->bits) - 1)) << o->shift;
 151      (i is the instruction which we are filling in, o is a pointer to
 152      this structure, and op is the opcode value; this assumes twos
 153      complement arithmetic).
 154
 155      If this field is not NULL, then simply call it with the
 156      instruction and the operand value.  It will return the new value
 157      of the instruction.  If the ERRMSG argument is not NULL, then if
 158      the operand value is illegal, *ERRMSG will be set to a warning
 159      string (the operand will be inserted in any case).  If the
 160      operand value is legal, *ERRMSG will be unchanged (most operands
 161      can accept any value).  */
 162   i370_insn_t (*insert) PARAMS ((i370_insn_t instruction, long op,
 163                                    const char **errmsg));
 164
 165   /* Extraction function.  This is used by the disassembler.  To
 166      extract this operand type from an instruction, check this field.
 167
 168      If it is NULL, compute
 169          op = ((i) >> o->shift) & ((1 << o->bits) - 1);
 170          if ((o->flags & I370_OPERAND_SIGNED) != 0
 171            && (op & (1 << (o->bits - 1))) != 0)
 172            op -= 1 << o->bits;
 173      (i is the instruction, o is a pointer to this structure, and op
 174      is the result; this assumes twos complement arithmetic).
 175
 176      If this field is not NULL, then simply call it with the
 177      instruction value.  It will return the value of the operand.  If
 178      the INVALID argument is not NULL, *INVALID will be set to
 179      non-zero if this operand type can not actually be extracted from
 180      this operand (i.e., the instruction does not match).  If the
 181      operand is valid, *INVALID will not be changed.  */
 182   long (*extract) PARAMS ((i370_insn_t instruction, int *invalid));
 183
 184   /* One bit syntax flags.  */
 185   unsigned long flags;
 186
 187   /* name -- handy for debugging, otherwise pointless */
 188   char * name;
 189 };
 190
 191 /* Elements in the table are retrieved by indexing with values from
 192    the operands field of the i370_opcodes table.  */
 193
 194 extern const struct i370_operand i370_operands[];
 195
 196 /* Values defined for the flags field of a struct i370_operand.  */
 197
 198 /* This operand should be wrapped in parentheses rather than
 199    separated from the previous by a comma.  This is used for S, RS and
 200    SS form instructions which want their operands to look like
 201    reg,displacement(basereg) */
 202 #define I370_OPERAND_SBASE (0x01)
 203
 204 /* This operand is a base register.  It may or may not appear next
 205    to an index register, i.e. either of the two forms
 206    reg,displacement(basereg)
 207    reg,displacement(index,basereg) */
 208 #define I370_OPERAND_BASE (0x02)
 209
 210 /* This pair of operands should be wrapped in parentheses rather than
 211    separated from the last by a comma.  This is used for the RX form
 212    instructions which want their operands to look like
 213    reg,displacement(index,basereg) */
 214 #define I370_OPERAND_INDEX (0x04)
 215
 216 /* This operand names a register.  The disassembler uses this to print
 217    register names with a leading 'r'.  */
 218 #define I370_OPERAND_GPR (0x08)
 219
 220 /* This operand names a floating point register.  The disassembler
 221    prints these with a leading 'f'.  */
 222 #define I370_OPERAND_FPR (0x10)
 223
 224 /* This operand is a displacement.  */
 225 #define I370_OPERAND_RELATIVE (0x20)
 226
 227 /* This operand is a length, such as that in SS form instructions.  */
 228 #define I370_OPERAND_LENGTH (0x40)
 229
 230 /* This operand is optional, and is zero if omitted.  This is used for
 231    the optional B2 field in the shift-left, shift-right instructions.  The
 232    assembler must count the number of operands remaining on the line,
 233    and the number of operands remaining for the opcode, and decide
 234    whether this operand is present or not.  The disassembler should
 235    print this operand out only if it is not zero.  */
 236 #define I370_OPERAND_OPTIONAL (0x80)
 237
 238 \f
 239 /* Define some misc macros.  We keep them with the operands table
 240    for simplicity.  The macro table is an array of struct i370_macro.  */
 241
 242 struct i370_macro
 243 {
 244   /* The macro name.  */
 245   const char *name;
 246
 247   /* The number of operands the macro takes.  */
 248   unsigned int operands;
 249
 250   /* One bit flags for the opcode.  These are used to indicate which
 251      specific processors support the instructions.  The values are the
 252      same as those for the struct i370_opcode flags field.  */
 253   unsigned long flags;
 254
 255   /* A format string to turn the macro into a normal instruction.
 256      Each %N in the string is replaced with operand number N (zero
 257      based).  */
 258   const char *format;
 259 };
 260
 261 extern const struct i370_macro i370_macros[];
 262 extern const int i370_num_macros;
 263
 264
 265 #endif /* I370_H */