tests/simple/macros.v

   1
   2 module test_def(a, y);
   3
   4 `define MSB_LSB_SEP :
   5 `define get_msb(off, len) ((off)+(len)-1)
   6 `define get_lsb(off, len) (off)
   7 `define sel_bits(offset, len) `get_msb(offset, len) `MSB_LSB_SEP `get_lsb(offset, len)
   8
   9 input [31:0] a;
  10 output [7:0] y;
  11
  12 assign y = a[`sel_bits(16, 8)];
  13
  14 endmodule
  15
  16 // ---------------------------------------------------
  17
  18 module test_ifdef(a, y);
  19
  20 input [2:0] a;
  21 output reg [31:0] y;
  22
  23 always @* begin
  24         y = 0;
  25
  26         `undef X
  27         `ifdef X
  28                 y = y + 42;
  29         `else
  30                 `undef  A
  31                 `undef  B
  32                 `ifdef A
  33                         y = (y << 1) | a[0];
  34                 `elsif B
  35                         y = (y << 1) | a[1];
  36                 `else
  37                         y = (y << 1) | a[2];
  38                 `endif
  39                 `undef  A
  40                 `define B
  41                 `ifdef A
  42                         y = (y << 1) | a[0];
  43                 `elsif B
  44                         y = (y << 1) | a[1];
  45                 `else
  46                         y = (y << 1) | a[2];
  47                 `endif
  48                 `define A
  49                 `undef  B
  50                 `ifdef A
  51                         y = (y << 1) | a[0];
  52                 `elsif B
  53                         y = (y << 1) | a[1];
  54                 `else
  55                         y = (y << 1) | a[2];
  56                 `endif
  57                 `define A
  58                 `define B
  59                 `ifdef A
  60                         y = (y << 1) | a[0];
  61                 `elsif B
  62                         y = (y << 1) | a[1];
  63                 `else
  64                         y = (y << 1) | a[2];
  65                 `endif
  66                 // ------------------------------------
  67                 `undef  A
  68                 `undef  B
  69                 `ifndef A
  70                         y = (y << 1) | a[0];
  71                 `elsif B
  72                         y = (y << 1) | a[1];
  73                 `else
  74                         y = (y << 1) | a[2];
  75                 `endif
  76                 `undef  A
  77                 `define B
  78                 `ifndef A
  79                         y = (y << 1) | a[0];
  80                 `elsif B
  81                         y = (y << 1) | a[1];
  82                 `else
  83                         y = (y << 1) | a[2];
  84                 `endif
  85                 `define A
  86                 `undef  B
  87                 `ifndef A
  88                         y = (y << 1) | a[0];
  89                 `elsif B
  90                         y = (y << 1) | a[1];
  91                 `else
  92                         y = (y << 1) | a[2];
  93                 `endif
  94                 `define A
  95                 `define B
  96                 `ifndef A
  97                         y = (y << 1) | a[0];
  98                 `elsif B
  99                         y = (y << 1) | a[1];
 100                 `else
 101                         y = (y << 1) | a[2];
 102                 `endif
 103                 // ------------------------------------
 104                 `undef A
 105                 `ifdef A
 106                         y = (y << 1) | a[0];
 107                 `else
 108                         y = (y << 1) | a[2];
 109                 `endif
 110                 `define A
 111                 `ifdef A
 112                         y = (y << 1) | a[0];
 113                 `else
 114                         y = (y << 1) | a[2];
 115                 `endif
 116                 // ------------------------------------
 117                 `undef A
 118                 `ifndef A
 119                         y = (y << 1) | a[0];
 120                 `else
 121                         y = (y << 1) | a[2];
 122                 `endif
 123                 `define A
 124                 `ifndef A
 125                         y = (y << 1) | a[0];
 126                 `else
 127                         y = (y << 1) | a[2];
 128                 `endif
 129         `endif
 130
 131         `define X
 132         `ifdef X
 133                 `undef  A
 134                 `undef  B
 135                 `ifdef A
 136                         y = (y << 1) | a[0];
 137                 `elsif B
 138                         y = (y << 1) | a[1];
 139                 `else
 140                         y = (y << 1) | a[2];
 141                 `endif
 142                 `undef  A
 143                 `define B
 144                 `ifdef A
 145                         y = (y << 1) | a[0];
 146                 `elsif B
 147                         y = (y << 1) | a[1];
 148                 `else
 149                         y = (y << 1) | a[2];
 150                 `endif
 151                 `define A
 152                 `undef  B
 153                 `ifdef A
 154                         y = (y << 1) | a[0];
 155                 `elsif B
 156                         y = (y << 1) | a[1];
 157                 `else
 158                         y = (y << 1) | a[2];
 159                 `endif
 160                 `define A
 161                 `define B
 162                 `ifdef A
 163                         y = (y << 1) | a[0];
 164                 `elsif B
 165                         y = (y << 1) | a[1];
 166                 `else
 167                         y = (y << 1) | a[2];
 168                 `endif
 169                 // ------------------------------------
 170                 `undef  A
 171                 `undef  B
 172                 `ifndef A
 173                         y = (y << 1) | a[0];
 174                 `elsif B
 175                         y = (y << 1) | a[1];
 176                 `else
 177                         y = (y << 1) | a[2];
 178                 `endif
 179                 `undef  A
 180                 `define B
 181                 `ifndef A
 182                         y = (y << 1) | a[0];
 183                 `elsif B
 184                         y = (y << 1) | a[1];
 185                 `else
 186                         y = (y << 1) | a[2];
 187                 `endif
 188                 `define A
 189                 `undef  B
 190                 `ifndef A
 191                         y = (y << 1) | a[0];
 192                 `elsif B
 193                         y = (y << 1) | a[1];
 194                 `else
 195                         y = (y << 1) | a[2];
 196                 `endif
 197                 `define A
 198                 `define B
 199                 `ifndef A
 200                         y = (y << 1) | a[0];
 201                 `elsif B
 202                         y = (y << 1) | a[1];
 203                 `else
 204                         y = (y << 1) | a[2];
 205                 `endif
 206                 // ------------------------------------
 207                 `undef A
 208                 `ifdef A
 209                         y = (y << 1) | a[0];
 210                 `else
 211                         y = (y << 1) | a[2];
 212                 `endif
 213                 `define A
 214                 `ifdef A
 215                         y = (y << 1) | a[0];
 216                 `else
 217                         y = (y << 1) | a[2];
 218                 `endif
 219                 // ------------------------------------
 220                 `undef A
 221                 `ifndef A
 222                         y = (y << 1) | a[0];
 223                 `else
 224                         y = (y << 1) | a[2];
 225                 `endif
 226                 `define A
 227                 `ifndef A
 228                         y = (y << 1) | a[0];
 229                 `else
 230                         y = (y << 1) | a[2];
 231                 `endif
 232         `else
 233                 y = y + 42;
 234         `endif
 235 end
 236
 237 endmodule
 238
 239 `define SIZE 4 // comment supported in this part
 240 module test_comment_in_macro ( din_a, dout_a );
 241 input [`SIZE-1:0] din_a;
 242 output [`SIZE-1:0] dout_a;
 243 assign dout_a = din_a | `SIZE'ha;
 244 endmodule