compilers/pcc/pcc-1.0.0/mip/node.h

   1 /*      $Id: node.h,v 1.36 2010/08/11 14:08:44 ragge Exp $      */
   2 /*
   3  * Copyright (c) 2003 Anders Magnusson (ragge@ludd.luth.se).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef NODE_H
  30 #define NODE_H
  31
  32 /*
  33  * The attribute struct contains stuff that might be useful in
  34  * both passes; but currently it's only legal to use it in pass1.
  35  */
  36 union aarg {
  37         int iarg;
  38         char *sarg;
  39         void *varg;
  40 };
  41
  42 struct attr {
  43         struct attr *next;
  44         int atype;
  45         union aarg aa[];
  46 };
  47
  48 /*
  49  * The node structure is the basic element in the compiler.
  50  * Depending on the operator, it may be one of several types.
  51  *
  52  * This is rewritten to be a struct instead of a union as it
  53  * was in the old compiler.
  54  */
  55 typedef unsigned int TWORD;
  56 #define NIL (NODE *)0
  57
  58 struct symtab;
  59 struct suedef;
  60 struct regw;
  61
  62 typedef struct node {
  63         struct  node *next;
  64         int     n_op;
  65         union {
  66                 int _reg;
  67                 struct regw *_regw;
  68         } n_3;
  69 #define n_reg   n_3._reg
  70 #define n_regw  n_3._regw
  71         TWORD   n_type;
  72         TWORD   n_qual;
  73         int     n_su;
  74         union {
  75                 char *  _name;
  76                 int     _stsize;
  77                 union   dimfun *_df;
  78         } n_5;
  79         union {
  80                 int     _label;
  81                 int     _stalign;
  82                 int     _flags;
  83 #if 0
  84                 /* not anymore */
  85                 struct  suedef *_sue;
  86 #else
  87                 struct attr *_ap;
  88 #endif
  89         } n_6;
  90         union {
  91                 struct {
  92                         union {
  93                                 struct node *_left;
  94                                 CONSZ _lval;
  95 #ifdef SPECIAL_INTEGERS
  96                                 SPECLVAL _slval;
  97 #endif
  98                         } n_l;
  99                         union {
 100                                 struct node *_right;
 101                                 int _rval;
 102                                 struct symtab *_sp;
 103                         } n_r;
 104                 } n_u;
 105 #ifdef SOFTFLOAT
 106 #ifdef FDFLOAT
 107                 /* To store F- or D-floats */
 108                 struct softfloat {
 109                         unsigned short fd1, fd2, fd3, fd4;
 110                 } _dcon;
 111 #else
 112 #error missing softfloat structure definition
 113 #endif
 114 #else
 115                 long double     _dcon;
 116 #endif
 117         } n_f;
 118 } NODE;
 119
 120 #define n_name  n_5._name
 121 #define n_stsize n_5._stsize
 122 #define n_df    n_5._df
 123
 124 #define n_label n_6._label
 125 #define n_stalign n_6._stalign
 126 #define n_flags n_6._flags
 127 #define n_ap    n_6._ap
 128
 129 #define n_left  n_f.n_u.n_l._left
 130 #define n_lval  n_f.n_u.n_l._lval
 131 #define n_slval n_f.n_u.n_l._slval
 132 #define n_right n_f.n_u.n_r._right
 133 #define n_rval  n_f.n_u.n_r._rval
 134 #define n_sp    n_f.n_u.n_r._sp
 135 #define n_dcon  n_f._dcon
 136
 137 #define NLOCAL1 010000
 138 #define NLOCAL2 020000
 139 #define NLOCAL3 040000
 140 /*
 141  * Node types.
 142  *
 143  * MAXOP is the highest number used by the backend.
 144  */
 145
 146 #define FREE    1
 147 /*
 148  * Value nodes.
 149  */
 150 #define NAME    2
 151 #define ICON    4
 152 #define FCON    5
 153 #define REG     6
 154 #define OREG    7
 155 #define TEMP    8
 156 #define XARG    9
 157
 158 /*
 159  * Arithmetic nodes.
 160  */
 161 #define PLUS    10
 162 #define MINUS   11
 163 #define DIV     12
 164 #define MOD     13
 165 #define MUL     14
 166
 167 /*
 168  * Bitwise operations.
 169  */
 170 #define AND     15
 171 #define OR      16
 172 #define ER      17
 173 #define LS      18
 174 #define RS      19
 175 #define COMPL   20
 176
 177 #define UMUL    23
 178 #define UMINUS  24
 179
 180 /*
 181  * Logical compare nodes.
 182  */
 183 #define EQ      25
 184 #define NE      26
 185 #define LE      27
 186 #define LT      28
 187 #define GE      29
 188 #define GT      30
 189 #define ULE     31
 190 #define ULT     32
 191 #define UGE     33
 192 #define UGT     34
 193
 194 /*
 195  * Branch nodes.
 196  */
 197 #define CBRANCH 35
 198
 199 /*
 200  * Convert types.
 201  */
 202 #define FLD     36
 203 #define SCONV   37
 204 #define PCONV   38
 205 #define PMCONV  39
 206 #define PVCONV  40
 207
 208 /*
 209  * Function calls.
 210  */
 211 #define CALL    41
 212 #define UCALL   42
 213 #define FORTCALL 43
 214 #define UFORTCALL 44
 215 #define STCALL  45
 216 #define USTCALL 46
 217
 218 /*
 219  *  Other used nodes.
 220  */
 221 #define CCODES  47
 222 #define CM      48
 223 #define ASSIGN  49
 224 #define STASG   50
 225 #define STARG   51
 226 #define FORCE   52
 227 #define XASM    53
 228 #define GOTO    54
 229 #define RETURN  55
 230 #define STREF   56
 231 #define FUNARG  57
 232 #define ADDROF  58
 233
 234 #define MAXOP   58
 235
 236 #endif