gas/itbl-lex.l

   1 /* itbl-lex.l
   2    Copyright 1997, 1998, 2001, 2002, 2005, 2006
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GAS, the GNU Assembler.
   6
   7    GAS 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, or (at your option)
  10    any later version.
  11
  12    GAS 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 GAS; see the file COPYING.  If not, write to the Free
  19    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  20    02110-1301, USA.  */
  21
  22 %{
  23 #include "as.h"
  24 #include "itbl-lex.h"
  25 #include <itbl-parse.h>
  26
  27 #ifdef DEBUG
  28 #define DBG(x) printf x
  29 #define MDBG(x) printf x
  30 #else
  31 #define DBG(x)
  32 #define MDBG(x)
  33 #endif
  34
  35 int insntbl_line = 1;
  36 %}
  37
  38 ALNUM   [A-Za-z0-9_]
  39 DIGIT   [0-9]
  40 ALPHA   [A-Za-z_]
  41 HEX     [0-9A-Fa-f]
  42
  43 %%
  44
  45 "creg"|"CREG" {
  46     return CREG;
  47   }
  48 "dreg"|"DREG" {
  49     return DREG;
  50   }
  51 "greg"|"GREG" {
  52     return GREG;
  53   }
  54 "immed"|"IMMED" {
  55     return IMMED;
  56   }
  57 "addr"|"ADDR" {
  58     return ADDR;
  59   }
  60 "insn"|"INSN" {
  61     return INSN;
  62   }
  63 "p"{DIGIT} {
  64     yytext[yyleng] = 0;
  65     yylval.processor = strtoul (yytext+1, 0, 0);
  66     return PNUM;
  67   }
  68 {DIGIT}+ {
  69     yytext[yyleng] = 0;
  70     yylval.num = strtoul (yytext, 0, 0);
  71     return NUM;
  72   }
  73 "0x"{HEX}+ {
  74     yytext[yyleng] = 0;
  75     yylval.num = strtoul (yytext, 0, 0);
  76     return NUM;
  77   }
  78 {ALPHA}{ALNUM}* {
  79     yytext[yyleng] = 0;
  80     yylval.str = strdup (yytext);
  81     return ID;
  82   }
  83 ";"|"#" {
  84     int c;
  85     while ((c = input ()) !=  EOF)
  86       {
  87         if (c ==  '\n')
  88         {
  89                 unput (c);
  90                 break;
  91         }
  92       }
  93   }
  94 "\n"    {
  95     insntbl_line++;
  96     MDBG (("in lex, NL = %d (x%x)\n", NL, NL));
  97     return NL;
  98   }
  99 " "|"\t" {
 100   }
 101 . {
 102     MDBG (("char = %x, %d\n", yytext[0], yytext[0]));
 103     return yytext[0];
 104   }
 105 %%
 106
 107 #ifndef yywrap
 108 int
 109 yywrap ()
 110   {
 111     return 1;
 112   }
 113 #endif