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s390.h revision 1.1.1.3 
      1 /* s390.h -- Header file for S390 opcode table
      2    Copyright 2000, 2001, 2003, 2010 Free Software Foundation, Inc.
      3    Contributed by Martin Schwidefsky (schwidefsky (at) de.ibm.com).
      4 
      5    This file is part of BFD, the Binary File Descriptor library.
      6 
      7    This program is free software; you can redistribute it and/or modify
      8    it under the terms of the GNU General Public License as published by
      9    the Free Software Foundation; either version 3 of the License, or
     10    (at your option) any later version.
     11 
     12    This program is distributed in the hope that it will be useful,
     13    but WITHOUT ANY WARRANTY; without even the implied warranty of
     14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     15    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 program; if not, write to the Free Software
     19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
     20    02110-1301, USA.  */
     21 
     22 #ifndef S390_H
     23 #define S390_H
     24 
     25 /* List of instruction sets variations. */
     26 
     27 enum s390_opcode_mode_val
     28   {
     29     S390_OPCODE_ESA = 0,
     30     S390_OPCODE_ZARCH
     31   };
     32 
     33 enum s390_opcode_cpu_val
     34   {
     35     S390_OPCODE_G5 = 0,
     36     S390_OPCODE_G6,
     37     S390_OPCODE_Z900,
     38     S390_OPCODE_Z990,
     39     S390_OPCODE_Z9_109,
     40     S390_OPCODE_Z9_EC,
     41     S390_OPCODE_Z10,
     42     S390_OPCODE_Z196,
     43     S390_OPCODE_MAXCPU
     44   };
     45 
     46 /* The opcode table is an array of struct s390_opcode.  */
     47 
     48 struct s390_opcode
     49   {
     50     /* The opcode name.  */
     51     const char * name;
     52 
     53     /* The opcode itself.  Those bits which will be filled in with
     54        operands are zeroes.  */
     55     unsigned char opcode[6];
     56 
     57     /* The opcode mask.  This is used by the disassembler.  This is a
     58        mask containing ones indicating those bits which must match the
     59        opcode field, and zeroes indicating those bits which need not
     60        match (and are presumably filled in by operands).  */
     61     unsigned char mask[6];
     62 
     63     /* The opcode length in bytes. */
     64     int oplen;
     65 
     66     /* An array of operand codes.  Each code is an index into the
     67        operand table.  They appear in the order which the operands must
     68        appear in assembly code, and are terminated by a zero.  */
     69     unsigned char operands[6];
     70 
     71     /* Bitmask of execution modes this opcode is available for.  */
     72     unsigned int modes;
     73 
     74     /* First cpu this opcode is available for.  */
     75     enum s390_opcode_cpu_val min_cpu;
     76   };
     77 
     78 /* The table itself is sorted by major opcode number, and is otherwise
     79    in the order in which the disassembler should consider
     80    instructions.  */
     81 extern const struct s390_opcode s390_opcodes[];
     82 extern const int                s390_num_opcodes;
     83 
     84 /* A opcode format table for the .insn pseudo mnemonic.  */
     85 extern const struct s390_opcode s390_opformats[];
     86 extern const int                s390_num_opformats;
     87 
     88 /* Values defined for the flags field of a struct powerpc_opcode.  */
     89 
     90 /* The operands table is an array of struct s390_operand.  */
     91 
     92 struct s390_operand
     93   {
     94     /* The number of bits in the operand.  */
     95     int bits;
     96 
     97     /* How far the operand is left shifted in the instruction.  */
     98     int shift;
     99 
    100     /* One bit syntax flags.  */
    101     unsigned long flags;
    102   };
    103 
    104 /* Elements in the table are retrieved by indexing with values from
    105    the operands field of the powerpc_opcodes table.  */
    106 
    107 extern const struct s390_operand s390_operands[];
    108 
    109 /* Values defined for the flags field of a struct s390_operand.  */
    110 
    111 /* This operand names a register.  The disassembler uses this to print
    112    register names with a leading 'r'.  */
    113 #define S390_OPERAND_GPR 0x1
    114 
    115 /* This operand names a floating point register.  The disassembler
    116    prints these with a leading 'f'. */
    117 #define S390_OPERAND_FPR 0x2
    118 
    119 /* This operand names an access register.  The disassembler
    120    prints these with a leading 'a'.  */
    121 #define S390_OPERAND_AR 0x4
    122 
    123 /* This operand names a control register.  The disassembler
    124    prints these with a leading 'c'.  */
    125 #define S390_OPERAND_CR 0x8
    126 
    127 /* This operand is a displacement.  */
    128 #define S390_OPERAND_DISP 0x10
    129 
    130 /* This operand names a base register.  */
    131 #define S390_OPERAND_BASE 0x20
    132 
    133 /* This operand names an index register, it can be skipped.  */
    134 #define S390_OPERAND_INDEX 0x40
    135 
    136 /* This operand is a relative branch displacement.  The disassembler
    137    prints these symbolically if possible.  */
    138 #define S390_OPERAND_PCREL 0x80
    139 
    140 /* This operand takes signed values.  */
    141 #define S390_OPERAND_SIGNED 0x100
    142 
    143 /* This operand is a length.  */
    144 #define S390_OPERAND_LENGTH 0x200
    145 
    146 /* This operand is optional. Only a single operand at the end of
    147    the instruction may be optional.  */
    148 #define S390_OPERAND_OPTIONAL 0x400
    149 
    150 /* The operand needs to be a valid GP or FP register pair.  */
    151 #define S390_OPERAND_REG_PAIR 0x800
    152 
    153 	#endif /* S390_H */
    154