mirror of https://github.com/brouhaha/dis6502.git
105 lines
2.1 KiB
Plaintext
105 lines
2.1 KiB
Plaintext
/*
|
|
* dis6502 by Robert Bond, Udi Finkelstein, and Eric Smith
|
|
*
|
|
* Copyright 2001-2018 Eric Smith <spacewar@gmail.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation. Note that permission is
|
|
* not granted to redistribute this program under the terms of any
|
|
* other version of the General Public License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
|
|
*/
|
|
|
|
|
|
%{
|
|
#undef ECHO
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "dis.h"
|
|
int lineno = 0;
|
|
char *strcpy();
|
|
%}
|
|
|
|
%option nounput
|
|
|
|
digit [0-9]
|
|
hexdigit [0-9a-fA-F]
|
|
alpha [a-zA-Z]
|
|
alphanum [0-9a-zA-Z_]
|
|
|
|
%%
|
|
|
|
[ \t] { ; }
|
|
|
|
[\n] { lineno++; return '\n'; }
|
|
|
|
\.[Ee][Qq][Uu] { return EQ; }
|
|
|
|
\.[Ee][Qq] { return EQ; }
|
|
|
|
\.[Ee][Qq][Ss] { return EQS; }
|
|
|
|
\.[Oo][Ff][Ss] { return OFS; }
|
|
|
|
\.[Ll][Ii] { return LI; }
|
|
|
|
\.[Tt][Rr][Aa][Cc][Ee] { return TSTART; }
|
|
|
|
\.[Ss][Tt][Oo][Pp] { return TSTOP; }
|
|
|
|
\.[Rr][Tt][Ss][Tt][Aa][Bb] { return TRTSTAB; }
|
|
|
|
\.[Jj][Tt][Aa][Bb]2 { return TJTAB2; }
|
|
|
|
\.[Jj][Tt][Aa][Bb] { return TJTAB; }
|
|
|
|
{digit}+ {
|
|
(void)sscanf(yytext, "%d", &token.ival);
|
|
return NUMBER;
|
|
}
|
|
|
|
\${hexdigit}+ {
|
|
(void)sscanf(yytext+1, "%x", &token.ival);
|
|
return NUMBER;
|
|
}
|
|
|
|
{alpha}{alphanum}* {
|
|
token.sval = emalloc((unsigned) strlen(yytext)+1);
|
|
(void)strcpy((char *)token.sval, (char *)yytext);
|
|
return NAME;
|
|
}
|
|
\*.* {
|
|
return COMMENT;
|
|
}
|
|
\;.* {
|
|
return COMMENT;
|
|
}
|
|
|
|
. { return yytext[0]; }
|
|
|
|
%%
|
|
|
|
char *
|
|
emalloc(n)
|
|
unsigned n;
|
|
{
|
|
char *ptr;
|
|
|
|
if ((ptr = malloc(n)) == (char *) 0) {
|
|
(void) fprintf(stderr,"out of core");
|
|
exit(1);
|
|
}
|
|
return ptr;
|
|
}
|