include/opcode/tic54x.h

   1 /* tic54x.h -- Header file for TI TMS320C54X opcode table
   2    Copyright 1999, 2000 Free Software Foundation, Inc.
   3    Written by Timothy Wall (twall@cygnus.com)
   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
  10 1, 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 COPYING.  If not, write to the Free
  19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.  */
  21
  22 #ifndef _TIC54X_H_
  23 #define _TIC54X_H_
  24
  25 typedef struct _symbol
  26 {
  27   const char *name;
  28   unsigned short value;
  29 } symbol;
  30
  31 enum optype {
  32   OPT = 0x8000,
  33   OP_None = 0x0,
  34
  35   OP_Xmem, /* AR3 or AR4, indirect */
  36   OP_Ymem, /* AR3 or AR4, indirect */
  37   OP_pmad, /* PROG mem, direct */
  38   OP_dmad, /* DATA mem, direct */
  39   OP_Smem,
  40   OP_Lmem, /* 32-bit single-addressed (direct/indirect) */
  41   OP_MMR,
  42   OP_PA,
  43   OP_Sind,
  44   OP_xpmad,
  45   OP_xpmad_ms7,
  46   OP_MMRX,
  47   OP_MMRY,
  48
  49   OP_SRC1, /* src accumulator in bit 8 */
  50   OP_SRC, /* src accumulator in bit 9 */
  51   OP_RND, /* rounded result dst accumulator, opposite of bit 8 */
  52   OP_DST, /* dst accumulator in bit 8 */
  53   OP_ARX, /* arX in bits 0-3 */
  54   OP_SHIFT, /* -16 to 15 (SHIFT), bits 0-4 */
  55   OP_SHFT, /*   0 to 15 (SHIFT1 in summary), bits 0-3 */
  56   OP_B, /* ACC B only */
  57   OP_A, /* ACC A only */
  58
  59   OP_lk, /* 16-bit immediate, '#' optional */
  60   OP_TS,
  61   OP_k8, /* -128 <= k <= 128 */
  62   OP_16, /* literal "16" */
  63   OP_BITC, /* 0 to 16 */
  64   OP_CC, /* condition code */
  65   OP_CC2, /* 4-bit condition code */
  66   OP_CC3, /* 2-bit condition code */
  67   OP_123, /* 1, 2, or 3 */
  68   OP_031, /* 0-31, numeric */
  69   OP_k5, /* 0 to 31 */
  70   OP_k8u, /* 0 to 255 */
  71   OP_ASM, /* "ASM" */
  72   OP_T, /* "T" */
  73   OP_DP, /* "DP" */
  74   OP_ARP, /* "ARP" */
  75   OP_k3, /* 0-7 */
  76   OP_lku, /* 0 to 65535 */
  77   OP_N, /* 0/1 or ST0/ST1 */
  78   OP_SBIT, /* status bit or 0-15 */
  79   OP_12, /* one or two */
  80   OP_k9, /* 9 bits of data page (DP) address */
  81   OP_TRN, /* "TRN" */
  82
  83 };
  84
  85 typedef struct _template
  86 {
  87   /* The opcode mnemonic */
  88   const char *name;
  89
  90   unsigned int words; /* insn size in words */
  91   int minops, maxops; /* min/max operand count */
  92   /* The significant bits in the opcode.  Other bits are zero.
  93      Instructions with more than 16 bits of opcode store the rest in the upper
  94      16 bits.
  95    */
  96   unsigned short opcode;
  97 #define INDIRECT(OP)    ((OP)&0x80)
  98 #define MOD(OP)         (((OP)>>3)&0xF)
  99 #define ARF(OP)         ((OP)&0x7)
 100 #define IS_LKADDR(OP)   (INDIRECT(OP) && MOD(OP)>=12)
 101 #define SRC(OP)         ((OP)&0x200)
 102 #define DST(OP)         ((OP)&0x100)
 103 #define SRC1(OP)        ((OP)&0x100)
 104 #define SHIFT(OP)       (((OP)&0x10)?(((OP)&0x1F)-32):((OP)&0x1F))
 105 #define SHFT(OP)        ((OP)&0xF)
 106 #define ARX(OP)         ((OP)&0x7)
 107 #define XMEM(OP)        (((OP)&0x00F0)>>4)
 108 #define YMEM(OP)        ((OP)&0x000F)
 109 #define XMOD(C)        (((C)&0xC)>>2)
 110 #define XARX(C)        (((C)&0x3)+2)
 111 #define CC3(OP)         (((OP)>>8)&0x3)
 112 #define SBIT(OP)        ((OP)&0xF)
 113 #define MMR(OP)         ((OP)&0x7F)
 114 #define MMRX(OP)        ((((OP)>>4)&0xF)+16)
 115 #define MMRY(OP)        (((OP)&0xF)+16)
 116
 117 #define OPTYPE(X)       ((X)&~OPT)
 118
 119   /* Ones in this mask indicate which bits must match the opcode field.
 120      Zeroes indicate don't care bits (operands and/or opcode options) */
 121   unsigned short mask;
 122
 123   /* An array of operand codes (at most 4 operands) */
 124 #define MAX_OPERANDS 4
 125   enum optype operand_types[MAX_OPERANDS];
 126
 127   /* Special purpose flags (e.g. branch type, parallel, delay, etc)
 128    */
 129   unsigned short flags;
 130 #define B_NEXT      0 /* normal execution, next insn is next address */
 131 #define B_BRANCH    1 /* next insn is in opcode */
 132 #define B_RET       2 /* next insn is on stack */
 133 #define B_BACC      3 /* next insn is in acc */
 134 #define B_REPEAT    4 /* next insn repeats */
 135 #define FL_BMASK    0x07
 136
 137 #define FL_DELAY    0x10 /* instruction uses delay slots */
 138 #define FL_EXT      0x20 /* instruction takes two words */
 139 #define FL_FAR      0x40 /* far mode addressing */
 140 #define FL_LP       0x80 /* LP-only instruction */
 141 #define FL_NR       0x100 /* no repeat allowed */
 142 #define FL_SMR      0x200 /* Smem read (for flagging write-only *+ARx */
 143
 144   unsigned short opcode2, mask2;   /* some insns have an extended opcode */
 145
 146 } template;
 147
 148 typedef struct _partemplate {
 149   char *name;
 150   char *parname;
 151   unsigned int words; /* length in words */
 152   int minops, maxops; /* min/max operand count for 2nd part of insn */
 153   unsigned short opcode;
 154   unsigned short mask;
 155   enum optype operand_types[MAX_OPERANDS];
 156   enum optype paroperand_types[MAX_OPERANDS];
 157 } partemplate;
 158
 159 extern const template tic54x_unknown_opcode;
 160 extern const template tic54x_optab[];
 161 extern const partemplate tic54x_paroptab[];
 162 extern const symbol mmregs[], regs[];
 163 extern const symbol condition_codes[], cc2_codes[], status_bits[];
 164 extern const symbol cc3_codes[];
 165 extern const char *misc_symbols[];
 166
 167 #endif /* TIC54X_H */