501 lines
9.3 KiB
Text
501 lines
9.3 KiB
Text
%{
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/* Copyright (C) 1991 Free Software Foundation, Inc.
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This file is part of GLD, the Gnu Linker.
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GLD is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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GLD is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GLD; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/*
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* $Id$
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*
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*/
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/*SUPPRESS 529*/
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/*SUPPRESS 26*/
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/*SUPPRESS 29*/
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#define LEXDEBUG 0
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#include "sysdep.h"
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#include "bfd.h"
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#include <ctype.h>
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#include "ldlex.h"
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#include "ld.h"
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#include "ldexp.h"
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#include "ldgram.tab.h"
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#include "ldmisc.h"
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#undef input
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#undef unput
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#define input lex_input
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#define unput lex_unput
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int debug;
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extern boolean ldgram_in_defsym;
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static boolean ldgram_had_equals;
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extern boolean ldgram_in_script;
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static char *command_line;
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extern int fgetc();
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extern int yyparse();
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typedef struct {
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char *name;
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int value;
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} keyword_type;
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#define RTOKEN(x) { yylval.token = x; return x; }
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keyword_type keywords[] =
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{
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"/", '/',
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"MEMORY",MEMORY,
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"ORIGIN",ORIGIN,
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"BLOCK",BLOCK,
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"LENGTH",LENGTH,
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"ALIGN",ALIGN_K,
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"SUBSECTION_ALIGN",SUBSECTION_ALIGN,
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"ADDR",ADDR,
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"ENTRY",ENTRY,
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"SCRIPT", SCRIPT,
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"ENDSCRIPT", ENDSCRIPT,
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"NEXT",NEXT,
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"MAP",MAP,
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"SIZEOF",SIZEOF,
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"TARGET",TARGET_K,
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"SEARCH_DIR",SEARCH_DIR,
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"OUTPUT",OUTPUT,
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"INPUT",INPUT,
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"DEFINED",DEFINED,
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"CREATE_OBJECT_SYMBOLS",CREATE_OBJECT_SYMBOLS,
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"FORCE_COMMON_ALLOCATION",FORCE_COMMON_ALLOCATION,
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"SECTIONS",SECTIONS,
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"FILL",FILL,
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"STARTUP",STARTUP,
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"OUTPUT_FORMAT",OUTPUT_FORMAT,
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"HLL",HLL,
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"SYSLIB",SYSLIB,
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"FLOAT",FLOAT,
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"LONG", LONG,
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"SHORT", SHORT,
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"BYTE", BYTE,
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"NOFLOAT",NOFLOAT,
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"o",ORIGIN,
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"org",ORIGIN,
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"l", LENGTH,
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"len", LENGTH,
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0,0};
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unsigned int lineno;
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extern boolean hex_mode;
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FILE *ldlex_input_stack;
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static unsigned int have_pushback;
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#define NPUSHBACK 10
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int pushback[NPUSHBACK];
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int thischar;
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extern char *ldfile_input_filename;
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int donehash = 0;
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int
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lex_input()
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{
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if (have_pushback > 0)
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{
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have_pushback --;
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return thischar = pushback[have_pushback];
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}
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if (ldlex_input_stack) {
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thischar = fgetc(ldlex_input_stack);
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if (thischar == EOF) {
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fclose(ldlex_input_stack);
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ldlex_input_stack = (FILE *)NULL;
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ldfile_input_filename = (char *)NULL;
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/* First char after script eof is a @ so that we can tell the grammer
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that we've eft */
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thischar = '@';
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}
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}
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else if (command_line && *command_line) {
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thischar = *(command_line++);
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}
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else {
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thischar = 0;
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}
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if(thischar == '\t') thischar = ' ';
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if (thischar == '\n') { thischar = ' '; lineno++; }
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return thischar ;
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}
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void
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lex_unput(c)
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int c;
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{
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if (have_pushback > NPUSHBACK) {
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info("%F%P Too many pushbacks\n");
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}
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pushback[have_pushback] = c;
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have_pushback ++;
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}
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int
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yywrap()
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{ return 1; }
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/*VARARGS*/
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void
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allprint(x)
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int x;
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{
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fprintf(yyout,"%d",x);
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}
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void
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sprint(x)
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char *x;
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{
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fprintf(yyout,"%s",x);
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}
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int thischar;
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void parse_line(arg)
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char *arg;
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{
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command_line = arg;
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have_pushback = 0;
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yyparse();
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}
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void
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parse_args(ac, av)
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int ac;
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char **av;
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{
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char *p;
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int i;
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size_t size = 0;
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char *dst;
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debug = 1;
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for (i= 1; i < ac; i++) {
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size += strlen(av[i]) + 2;
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}
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dst = p = (char *)ldmalloc(size + 2);
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/* Put a space arount each option */
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for (i =1; i < ac; i++) {
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unsigned int s = strlen(av[i]);
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*dst++ = ' ';
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memcpy(dst, av[i], s);
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dst[s] = ' ';
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dst += s + 1;
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}
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*dst = 0;
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parse_line(p);
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free(p);
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}
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static long
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DEFUN(number,(default_if_zero,base),
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int default_if_zero AND
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int base)
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{
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unsigned long l = 0;
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int ch = yytext[0];
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if (ch == 0) {
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base = default_if_zero;
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}
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while (1) {
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switch (ch) {
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case 'x':
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base = 16;
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break;
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case 'k':
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case 'K':
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l =l * 1024;
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break;
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case 'm':
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case 'M':
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l =l * 1024 * 1024;
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break;
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case '0': case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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l = l * base + ch - '0';
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break;
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case 'a': case 'b': case 'c' : case 'd' : case 'e': case 'f':
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l =l *base + ch - 'a' + 10;
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break;
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case 'A': case 'B': case 'C' : case 'D' : case 'E': case 'F':
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l =l *base + ch - 'A' + 10;
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break;
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default:
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unput(ch);
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yylval.integer = l;
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return INT;
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}
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ch = input();
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}
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}
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%}
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%a 4000
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%o 5000
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FILENAMECHAR [a-zA-Z0-9\/\.\-\_\+\=]
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FILENAME {FILENAMECHAR}+
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WHITE [ \t]+
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%%
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"@" { return ENDSCRIPT; }
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"\ -defsym\ " { return OPTION_defsym; }
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"\ -noinhibit_exec\ " { return OPTION_noinhibit_exec; }
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"\ -format\ " { return OPTION_format; }
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"\ -n\ " { return OPTION_n; }
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"\ -r\ " { return OPTION_r; }
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"\ -Ur\ " { return OPTION_Ur; }
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"\ -o\ " { return OPTION_o; }
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"\ -g\ " { return OPTION_g; }
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"\ -e\ " { return OPTION_e; }
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"\ -b\ " { return OPTION_b; }
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"\ -dc\ " { return OPTION_dc; }
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"\ -dp\ " { return OPTION_dp; }
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"\ -d\ " { return OPTION_d; }
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"\ -v\ " { return OPTION_v; }
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"\ -M\ " { return OPTION_M; }
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"\ -t\ " { return OPTION_t; }
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"\ -X\ " { return OPTION_X; }
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"\ -x\ " { return OPTION_x; }
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"\ -c\ " { return OPTION_c; }
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"\ -R\ " { return OPTION_R; }
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"\ -u\ " { return OPTION_u; }
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"\ -s\ " { return OPTION_s; }
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"\ -S\ " { return OPTION_S; }
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"\ -l"{FILENAME} {
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yylval.name = buystring(yytext+3);
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return OPTION_l;
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}
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"\ -L"{FILENAME} {
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yylval.name = buystring(yytext+3);
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return OPTION_L;
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}
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"\ -Ttext\ " {
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yylval.name = ".text";
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return OPTION_Texp;
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}
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"\ -Tdata\ " {
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yylval.name = ".data";
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return OPTION_Texp;
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}
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"\ -Tbss\ " {
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yylval.name = ".bss";
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return OPTION_Texp;
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}
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"\ -T"{FILENAME} {
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yylval.name = buystring(yytext+3);
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return OPTION_Tfile;
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}
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"\ -T\ " {
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return OPTION_T;
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}
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"\ -F"{FILENAME} {
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return OPTION_F;
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}
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"\ -F\ " {
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return OPTION_F;
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}
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"\ -A"{FILENAME} {
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yylval.name = buystring(yytext+3);
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return OPTION_Aarch;
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}
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" " { if (ldgram_had_equals == true) ldgram_in_defsym = false; }
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"<<=" { RTOKEN(LSHIFTEQ);}
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">>=" { RTOKEN(RSHIFTEQ);}
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"||" { RTOKEN(OROR);}
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"==" { RTOKEN(EQ);}
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"!=" { RTOKEN(NE);}
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">=" { RTOKEN(GE);}
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"<=" { RTOKEN(LE);}
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"<<" { RTOKEN(LSHIFT);}
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">>" { RTOKEN(RSHIFT);}
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"+=" { RTOKEN(PLUSEQ);}
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"-=" { RTOKEN(MINUSEQ);}
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"*=" { RTOKEN(MULTEQ);}
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"/=" { RTOKEN(DIVEQ);}
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"&=" { RTOKEN(ANDEQ);}
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"|=" { RTOKEN(OREQ);}
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"&&" { RTOKEN(ANDAND);}
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">" { RTOKEN('>');}
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"," { RTOKEN(',');}
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"&" { RTOKEN('&');}
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"|" { RTOKEN('|');}
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"~" { RTOKEN('~');}
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"!" { RTOKEN('!');}
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"?" { RTOKEN('?');}
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"*" { RTOKEN('*');}
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"%" { RTOKEN('%');}
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"<" { RTOKEN('<');}
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">" { RTOKEN('>');}
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"}" { RTOKEN('}') ; }
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"{" { RTOKEN('{'); }
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")" { RTOKEN(')');}
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"(" { RTOKEN('(');}
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"]" { RTOKEN(']');}
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"[" { RTOKEN('[');}
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":" { RTOKEN(':'); }
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";" { RTOKEN('\;');}
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"-" { RTOKEN('-');}
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"/*" {
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while (1) {
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int ch;
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ch = input();
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while (ch != '*') {
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ch = input();
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}
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if (input() == '/') {
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break;
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}
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unput(yytext[yyleng-1]);
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}
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}
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"\""[^\"]*"\"" {
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yylval.name = buystring(yytext+1);
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yylval.name[yyleng-2] = 0; /* Fry final quote */
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return NAME;
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}
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{FILENAMECHAR} {
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boolean loop = false;
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int ch;
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keyword_type *k;
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/* If we're in hex mode (only after a -T) then all we can see are numbers
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hex digit we see will be a number. */
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if (hex_mode) {
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return number(16, 16);
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}
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/* If we're in a defsym then all things starting with a digit are in
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hex */
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if (isdigit(yytext[0]) && ldgram_in_defsym) {
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return number(16,16);
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}
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/* Otherwise if we're in a script we will parse the numbers
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normally */
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if (ldgram_in_script == true && isdigit(yytext[0])) {
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return number(8,10);
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}
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/* Anywhere not in a script or defsym, an opertor is part of a
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filename, except / and, which is an operator when on its own */
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if (ldgram_in_script == true|| ldgram_in_defsym == true) {
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switch (yytext[0]) {
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case '*': RTOKEN('*');
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case '=': {
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ldgram_had_equals = true;
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RTOKEN('=');
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}
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break;
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case '/': {
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if (ldgram_in_defsym) RTOKEN('/');
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}
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break;
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case '+': RTOKEN('+');
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case '-': RTOKEN('-');
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case '!': RTOKEN('!');
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case '~': RTOKEN('~');
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}
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}
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/* Otherwise this must be a file or a symbol name, and it will continue to be a
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filename until we get to something strange. In scripts operator looking
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things are taken to be operators, except /, which will be left
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*/
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ch = input();
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while (true)
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{
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if (ldgram_in_defsym == true) {
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switch (ch) {
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case '*':
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case '=':
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case '+':
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case '/':
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case '-':
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case '!':
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case '~':
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goto quit;
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}
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}
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if (isalpha(ch) || isdigit(ch) || ch == '.' || ch == '_' ||
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ch == '/' || ch == '.' || ch == '+' || ch == '-' || ch =='=') {
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yytext[yyleng++] = ch;
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}
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else
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break;
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ch = input();
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}
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quit:;
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yytext[yyleng] = 0;
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unput(ch);
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for(k = keywords; k ->name != (char *)NULL; k++) {
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if (strcmp(k->name, yytext)==0) {
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yylval.token = k->value;
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return k->value;
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}
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}
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yylval.name = buystring(yytext);
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return NAME;
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}
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%%
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