gas/itbl-lex.l

   1 %option noyywrap
   2
   3 /* itbl-lex.l
   4    Copyright (C) 1997-2020 Free Software Foundation, Inc.
   5
   6    This file is part of GAS, the GNU Assembler.
   7
   8    GAS is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3, or (at your option)
  11    any later version.
  12
  13    GAS is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with GAS; see the file COPYING.  If not, write to the Free
  20    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  21    02110-1301, USA.  */
  22
  23 %{
  24 #include "as.h"
  25 #include "itbl-lex.h"
  26 #include <itbl-parse.h>
  27
  28 #ifdef DEBUG
  29 #define DBG(x) printf x
  30 #define MDBG(x) printf x
  31 #else
  32 #define DBG(x)
  33 #define MDBG(x)
  34 #endif
  35
  36 int insntbl_line = 1;
  37 %}
  38
  39 ALNUM   [A-Za-z0-9_]
  40 DIGIT   [0-9]
  41 ALPHA   [A-Za-z_]
  42 HEX     [0-9A-Fa-f]
  43
  44 %%
  45
  46 "creg"|"CREG" {
  47     return CREG;
  48   }
  49 "dreg"|"DREG" {
  50     return DREG;
  51   }
  52 "greg"|"GREG" {
  53     return GREG;
  54   }
  55 "immed"|"IMMED" {
  56     return IMMED;
  57   }
  58 "addr"|"ADDR" {
  59     return ADDR;
  60   }
  61 "insn"|"INSN" {
  62     return INSN;
  63   }
  64 "p"{DIGIT} {
  65     yytext[yyleng] = 0;
  66     yylval.processor = strtoul (yytext+1, 0, 0);
  67     return PNUM;
  68   }
  69 {DIGIT}+ {
  70     yytext[yyleng] = 0;
  71     yylval.num = strtoul (yytext, 0, 0);
  72     return NUM;
  73   }
  74 "0x"{HEX}+ {
  75     yytext[yyleng] = 0;
  76     yylval.num = strtoul (yytext, 0, 0);
  77     return NUM;
  78   }
  79 {ALPHA}{ALNUM}* {
  80     yytext[yyleng] = 0;
  81     yylval.str = strdup (yytext);
  82     return ID;
  83   }
  84 ";"|"#" {
  85     int c;
  86     while ((c = input ()) !=  EOF)
  87       {
  88         if (c ==  '\n')
  89         {
  90                 unput (c);
  91                 break;
  92         }
  93       }
  94   }
  95 "\n"    {
  96     insntbl_line++;
  97     MDBG (("in lex, NL = %d (x%x)\n", NL, NL));
  98     return NL;
  99   }
 100 " "|"\t" {
 101   }
 102 . {
 103     MDBG (("char = %x, %d\n", yytext[0], yytext[0]));
 104     return yytext[0];
 105   }
 106 %%