gas/itbl-lex.l

   1 /* itbl-lex.l
   2    Copyright (C) 1997-2016 Free Software Foundation, Inc.
   3
   4    This file is part of GAS, the GNU Assembler.
   5
   6    GAS is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3, or (at your option)
   9    any later version.
  10
  11    GAS is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with GAS; see the file COPYING.  If not, write to the Free
  18    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  19    02110-1301, USA.  */
  20
  21 %{
  22 #include "as.h"
  23 #include "itbl-lex.h"
  24 #include <itbl-parse.h>
  25
  26 #ifdef DEBUG
  27 #define DBG(x) printf x
  28 #define MDBG(x) printf x
  29 #else
  30 #define DBG(x)
  31 #define MDBG(x)
  32 #endif
  33
  34 int insntbl_line = 1;
  35 %}
  36
  37 ALNUM   [A-Za-z0-9_]
  38 DIGIT   [0-9]
  39 ALPHA   [A-Za-z_]
  40 HEX     [0-9A-Fa-f]
  41
  42 %%
  43
  44 "creg"|"CREG" {
  45     return CREG;
  46   }
  47 "dreg"|"DREG" {
  48     return DREG;
  49   }
  50 "greg"|"GREG" {
  51     return GREG;
  52   }
  53 "immed"|"IMMED" {
  54     return IMMED;
  55   }
  56 "addr"|"ADDR" {
  57     return ADDR;
  58   }
  59 "insn"|"INSN" {
  60     return INSN;
  61   }
  62 "p"{DIGIT} {
  63     yytext[yyleng] = 0;
  64     yylval.processor = strtoul (yytext+1, 0, 0);
  65     return PNUM;
  66   }
  67 {DIGIT}+ {
  68     yytext[yyleng] = 0;
  69     yylval.num = strtoul (yytext, 0, 0);
  70     return NUM;
  71   }
  72 "0x"{HEX}+ {
  73     yytext[yyleng] = 0;
  74     yylval.num = strtoul (yytext, 0, 0);
  75     return NUM;
  76   }
  77 {ALPHA}{ALNUM}* {
  78     yytext[yyleng] = 0;
  79     yylval.str = strdup (yytext);
  80     return ID;
  81   }
  82 ";"|"#" {
  83     int c;
  84     while ((c = input ()) !=  EOF)
  85       {
  86         if (c ==  '\n')
  87         {
  88                 unput (c);
  89                 break;
  90         }
  91       }
  92   }
  93 "\n"    {
  94     insntbl_line++;
  95     MDBG (("in lex, NL = %d (x%x)\n", NL, NL));
  96     return NL;
  97   }
  98 " "|"\t" {
  99   }
 100 . {
 101     MDBG (("char = %x, %d\n", yytext[0], yytext[0]));
 102     return yytext[0];
 103   }
 104 %%
 105
 106 #ifndef yywrap
 107 int
 108 yywrap ()
 109   {
 110     return 1;
 111   }
 112 #endif