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  1. /* s390.h -- Header file for S390 opcode table
  2.    Copyright (C) 2000-2015 Free Software Foundation, Inc.
  3.    Contributed by Martin Schwidefsky (schwidefsky@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_ZEC12,
  44.     S390_OPCODE_Z13,
  45.     S390_OPCODE_MAXCPU
  46.   };
  47.  
  48. /* Instruction specific flags.  */
  49. #define S390_INSTR_FLAG_OPTPARM 0x1
  50. #define S390_INSTR_FLAG_HTM 0x2
  51. #define S390_INSTR_FLAG_VX 0x4
  52. #define S390_INSTR_FLAG_FACILITY_MASK 0x6
  53.  
  54. /* The opcode table is an array of struct s390_opcode.  */
  55.  
  56. struct s390_opcode
  57.   {
  58.     /* The opcode name.  */
  59.     const char * name;
  60.  
  61.     /* The opcode itself.  Those bits which will be filled in with
  62.        operands are zeroes.  */
  63.     unsigned char opcode[6];
  64.  
  65.     /* The opcode mask.  This is used by the disassembler.  This is a
  66.        mask containing ones indicating those bits which must match the
  67.        opcode field, and zeroes indicating those bits which need not
  68.        match (and are presumably filled in by operands).  */
  69.     unsigned char mask[6];
  70.  
  71.     /* The opcode length in bytes. */
  72.     int oplen;
  73.  
  74.     /* An array of operand codes.  Each code is an index into the
  75.        operand table.  They appear in the order which the operands must
  76.        appear in assembly code, and are terminated by a zero.  */
  77.     unsigned char operands[6];
  78.  
  79.     /* Bitmask of execution modes this opcode is available for.  */
  80.     unsigned int modes;
  81.  
  82.     /* First cpu this opcode is available for.  */
  83.     enum s390_opcode_cpu_val min_cpu;
  84.  
  85.     /* Instruction specific flags.  */
  86.     unsigned int flags;
  87.   };
  88.  
  89. /* The table itself is sorted by major opcode number, and is otherwise
  90.    in the order in which the disassembler should consider
  91.    instructions.  */
  92. extern const struct s390_opcode s390_opcodes[];
  93. extern const int                s390_num_opcodes;
  94.  
  95. /* A opcode format table for the .insn pseudo mnemonic.  */
  96. extern const struct s390_opcode s390_opformats[];
  97. extern const int                s390_num_opformats;
  98.  
  99. /* Values defined for the flags field of a struct s390_opcode.  */
  100.  
  101. /* The operands table is an array of struct s390_operand.  */
  102.  
  103. struct s390_operand
  104.   {
  105.     /* The number of bits in the operand.  */
  106.     int bits;
  107.  
  108.     /* How far the operand is left shifted in the instruction.  */
  109.     int shift;
  110.  
  111.     /* One bit syntax flags.  */
  112.     unsigned long flags;
  113.   };
  114.  
  115. /* Elements in the table are retrieved by indexing with values from
  116.    the operands field of the s390_opcodes table.  */
  117.  
  118. extern const struct s390_operand s390_operands[];
  119.  
  120. /* Values defined for the flags field of a struct s390_operand.  */
  121.  
  122. /* This operand names a register.  The disassembler uses this to print
  123.    register names with a leading 'r'.  */
  124. #define S390_OPERAND_GPR 0x1
  125.  
  126. /* This operand names a floating point register.  The disassembler
  127.    prints these with a leading 'f'. */
  128. #define S390_OPERAND_FPR 0x2
  129.  
  130. /* This operand names an access register.  The disassembler
  131.    prints these with a leading 'a'.  */
  132. #define S390_OPERAND_AR 0x4
  133.  
  134. /* This operand names a control register.  The disassembler
  135.    prints these with a leading 'c'.  */
  136. #define S390_OPERAND_CR 0x8
  137.  
  138. /* This operand is a displacement.  */
  139. #define S390_OPERAND_DISP 0x10
  140.  
  141. /* This operand names a base register.  */
  142. #define S390_OPERAND_BASE 0x20
  143.  
  144. /* This operand names an index register, it can be skipped.  */
  145. #define S390_OPERAND_INDEX 0x40
  146.  
  147. /* This operand is a relative branch displacement.  The disassembler
  148.    prints these symbolically if possible.  */
  149. #define S390_OPERAND_PCREL 0x80
  150.  
  151. /* This operand takes signed values.  */
  152. #define S390_OPERAND_SIGNED 0x100
  153.  
  154. /* This operand is a length.  */
  155. #define S390_OPERAND_LENGTH 0x200
  156.  
  157. /* This operand is optional. Only a single operand at the end of
  158.    the instruction may be optional.  */
  159. #define S390_OPERAND_OPTIONAL 0x400
  160.  
  161. /* The operand needs to be a valid GP or FP register pair.  */
  162. #define S390_OPERAND_REG_PAIR 0x800
  163.  
  164. /* This operand names a vector register.  The disassembler uses this
  165.    to print register names with a leading 'v'.  */
  166. #define S390_OPERAND_VR 0x1000
  167.  
  168. #define S390_OPERAND_CP16 0x2000
  169.  
  170. #define S390_OPERAND_OR1 0x4000
  171. #define S390_OPERAND_OR2 0x8000
  172. #define S390_OPERAND_OR8 0x10000
  173.  
  174. #endif /* S390_H */
  175.