include/opcode/or32.h

   1 /* Table of opcodes for the OpenRISC 1000 ISA.
   2    Copyright 2002 Free Software Foundation, Inc.
   3    Contributed by Damjan Lampret (lampret@opencores.org).
   4
   5    This file is part of or1k_gen_isa, or1ksim, GDB and GAS.
   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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 /* We treat all letters the same in encode/decode routines so
  22    we need to assign some characteristics to them like signess etc.  */
  23
  24 #ifndef OR32_H_ISA
  25 #define OR32_H_ISA
  26
  27 #define NUM_UNSIGNED (0)
  28 #define NUM_SIGNED (1)
  29
  30 #ifndef PARAMS
  31 #define PARAMS(x) x
  32 #endif
  33
  34 #define MAX_GPRS 32
  35 #define PAGE_SIZE 4096
  36 #undef __HALF_WORD_INSN__
  37
  38 #define OPERAND_DELIM (',')
  39
  40 #define OR32_IF_DELAY (1)
  41 #define OR32_W_FLAG   (2)
  42 #define OR32_R_FLAG   (4)
  43
  44 struct or32_letter
  45 {
  46   char letter;
  47   int  sign;
  48   /* int  reloc; relocation per letter ??  */
  49 };
  50
  51 /* Main instruction specification array.  */
  52 struct or32_opcode
  53 {
  54   /* Name of the instruction.  */
  55   char *name;
  56
  57   /* A string of characters which describe the operands.
  58      Valid characters are:
  59      ,() Itself.  Characters appears in the assembly code.
  60      rA  Register operand.
  61      rB  Register operand.
  62      rD  Register operand.
  63      I   An immediate operand, range -32768 to 32767.
  64      J   An immediate operand, range . (unused)
  65      K   An immediate operand, range 0 to 65535.
  66      L   An immediate operand, range 0 to 63.
  67      M   An immediate operand, range . (unused)
  68      N   An immediate operand, range -33554432 to 33554431.
  69      O   An immediate operand, range . (unused).  */
  70   char *args;
  71
  72   /* Opcode and operand encoding.  */
  73   char *encoding;
  74   void (*exec) PARAMS ((void));
  75   unsigned int flags;
  76 };
  77
  78 #define OPTYPE_LAST (0x80000000)
  79 #define OPTYPE_OP   (0x40000000)
  80 #define OPTYPE_REG  (0x20000000)
  81 #define OPTYPE_SIG  (0x10000000)
  82 #define OPTYPE_DIS  (0x08000000)
  83 #define OPTYPE_DST  (0x04000000)
  84 #define OPTYPE_SBIT (0x00001F00)
  85 #define OPTYPE_SHR  (0x0000001F)
  86 #define OPTYPE_SBIT_SHR (8)
  87
  88 /* MM: Data how to decode operands.  */
  89 extern struct insn_op_struct
  90 {
  91   unsigned long type;
  92   unsigned long data;
  93 } **op_start;
  94
  95 #ifdef HAS_EXECUTION
  96 extern void l_invalid PARAMS ((void));
  97 extern void l_sfne    PARAMS ((void));
  98 extern void l_bf      PARAMS ((void));
  99 extern void l_add     PARAMS ((void));
 100 extern void l_sw      PARAMS ((void));
 101 extern void l_sb      PARAMS ((void));
 102 extern void l_sh      PARAMS ((void));
 103 extern void l_lwz     PARAMS ((void));
 104 extern void l_lbs     PARAMS ((void));
 105 extern void l_lbz     PARAMS ((void));
 106 extern void l_lhs     PARAMS ((void));
 107 extern void l_lhz     PARAMS ((void));
 108 extern void l_movhi   PARAMS ((void));
 109 extern void l_and     PARAMS ((void));
 110 extern void l_or      PARAMS ((void));
 111 extern void l_xor     PARAMS ((void));
 112 extern void l_sub     PARAMS ((void));
 113 extern void l_mul     PARAMS ((void));
 114 extern void l_div     PARAMS ((void));
 115 extern void l_divu    PARAMS ((void));
 116 extern void l_sll     PARAMS ((void));
 117 extern void l_sra     PARAMS ((void));
 118 extern void l_srl     PARAMS ((void));
 119 extern void l_j       PARAMS ((void));
 120 extern void l_jal     PARAMS ((void));
 121 extern void l_jalr    PARAMS ((void));
 122 extern void l_jr      PARAMS ((void));
 123 extern void l_rfe     PARAMS ((void));
 124 extern void l_nop     PARAMS ((void));
 125 extern void l_bnf     PARAMS ((void));
 126 extern void l_sfeq    PARAMS ((void));
 127 extern void l_sfgts   PARAMS ((void));
 128 extern void l_sfges   PARAMS ((void));
 129 extern void l_sflts   PARAMS ((void));
 130 extern void l_sfles   PARAMS ((void));
 131 extern void l_sfgtu   PARAMS ((void));
 132 extern void l_sfgeu   PARAMS ((void));
 133 extern void l_sfltu   PARAMS ((void));
 134 extern void l_sfleu   PARAMS ((void));
 135 extern void l_mtspr   PARAMS ((void));
 136 extern void l_mfspr   PARAMS ((void));
 137 extern void l_sys     PARAMS ((void));
 138 extern void l_trap    PARAMS ((void)); /* CZ 21/06/01.  */
 139 extern void l_macrc   PARAMS ((void));
 140 extern void l_mac     PARAMS ((void));
 141 extern void l_msb     PARAMS ((void));
 142 extern void l_invalid PARAMS ((void));
 143 extern void l_cust1   PARAMS ((void));
 144 extern void l_cust2   PARAMS ((void));
 145 extern void l_cust3   PARAMS ((void));
 146 extern void l_cust4   PARAMS ((void));
 147 #endif
 148 extern void l_none    PARAMS ((void));
 149
 150 extern const struct or32_letter or32_letters[];
 151
 152 extern const struct  or32_opcode or32_opcodes[];
 153
 154 extern const unsigned int or32_num_opcodes;
 155
 156 /* Calculates instruction length in bytes.  Always 4 for OR32.  */
 157 extern int insn_len PARAMS ((int));
 158
 159 /* Is individual insn's operand signed or unsigned?  */
 160 extern int letter_signed PARAMS ((char));
 161
 162 /* Number of letters in the individual lettered operand.  */
 163 extern int letter_range PARAMS ((char));
 164
 165 /* MM: Returns index of given instruction name.  */
 166 extern int insn_index PARAMS ((char *));
 167
 168 /* MM: Returns instruction name from index.  */
 169 extern const char *insn_name PARAMS ((int));
 170
 171 /* MM: Constructs new FSM, based on or32_opcodes.  */
 172 extern void build_automata PARAMS ((void));
 173
 174 /* MM: Destructs FSM.  */
 175 extern void destruct_automata PARAMS ((void));
 176
 177 /* MM: Decodes instruction using FSM.  Call build_automata first.  */
 178 extern int insn_decode PARAMS ((unsigned int));
 179
 180 /* Disassemble one instruction from insn to disassemble.
 181    Return the size of the instruction.  */
 182 int disassemble_insn PARAMS ((unsigned long));
 183
 184 #endif