mirror of
https://github.com/darlinghq/darling-gdb.git
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1089 lines
24 KiB
Plaintext
1089 lines
24 KiB
Plaintext
%{ /* deffilep.y - parser for .def files */
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/* Copyright 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003
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Free Software Foundation, Inc.
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This file is part of GNU Binutils.
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This program 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 2 of the License, or
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(at your option) any later version.
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This program 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 this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include <stdio.h>
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#include "libiberty.h"
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#include "safe-ctype.h"
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#include "bfd.h"
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#include "sysdep.h"
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#include "ld.h"
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#include "ldmisc.h"
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#include "deffile.h"
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#define TRACE 0
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#define ROUND_UP(a, b) (((a)+((b)-1))&~((b)-1))
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/* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc),
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as well as gratuitiously global symbol names, so we can have multiple
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yacc generated parsers in ld. Note that these are only the variables
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produced by yacc. If other parser generators (bison, byacc, etc) produce
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additional global names that conflict at link time, then those parser
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generators need to be fixed instead of adding those names to this list. */
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#define yymaxdepth def_maxdepth
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#define yyparse def_parse
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#define yylex def_lex
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#define yyerror def_error
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#define yylval def_lval
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#define yychar def_char
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#define yydebug def_debug
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#define yypact def_pact
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#define yyr1 def_r1
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#define yyr2 def_r2
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#define yydef def_def
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#define yychk def_chk
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#define yypgo def_pgo
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#define yyact def_act
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#define yyexca def_exca
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#define yyerrflag def_errflag
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#define yynerrs def_nerrs
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#define yyps def_ps
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#define yypv def_pv
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#define yys def_s
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#define yy_yys def_yys
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#define yystate def_state
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#define yytmp def_tmp
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#define yyv def_v
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#define yy_yyv def_yyv
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#define yyval def_val
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#define yylloc def_lloc
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#define yyreds def_reds /* With YYDEBUG defined. */
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#define yytoks def_toks /* With YYDEBUG defined. */
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#define yylhs def_yylhs
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#define yylen def_yylen
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#define yydefred def_yydefred
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#define yydgoto def_yydgoto
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#define yysindex def_yysindex
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#define yyrindex def_yyrindex
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#define yygindex def_yygindex
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#define yytable def_yytable
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#define yycheck def_yycheck
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static void def_description PARAMS ((const char *));
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static void def_exports PARAMS ((const char *, const char *, int, int));
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static void def_heapsize PARAMS ((int, int));
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static void def_import PARAMS ((const char *, const char *, const char *, const char *, int));
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static void def_library PARAMS ((const char *, int));
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static def_file_module *def_stash_module PARAMS ((def_file *, const char *));
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static void def_name PARAMS ((const char *, int));
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static void def_section PARAMS ((const char *, int));
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static void def_section_alt PARAMS ((const char *, const char *));
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static void def_stacksize PARAMS ((int, int));
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static void def_version PARAMS ((int, int));
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static void def_directive PARAMS ((char *));
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static int def_parse PARAMS ((void));
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static int def_error PARAMS ((const char *));
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static void put_buf PARAMS ((char));
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static int def_getc PARAMS ((void));
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static int def_ungetc PARAMS ((int));
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static int def_lex PARAMS ((void));
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static int lex_forced_token = 0;
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static const char *lex_parse_string = 0;
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static const char *lex_parse_string_end = 0;
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%}
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%union {
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char *id;
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int number;
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};
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%token NAME, LIBRARY, DESCRIPTION, STACKSIZE, HEAPSIZE, CODE, DATAU, DATAL
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%token SECTIONS, EXPORTS, IMPORTS, VERSIONK, BASE, CONSTANTU, CONSTANTL
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%token PRIVATEU, PRIVATEL
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%token READ WRITE EXECUTE SHARED NONAMEU NONAMEL DIRECTIVE
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%token <id> ID
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%token <number> NUMBER
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%type <number> opt_base opt_ordinal
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%type <number> attr attr_list opt_number exp_opt_list exp_opt
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%type <id> opt_name opt_equal_name dot_name
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%%
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start: start command
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| command
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;
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command:
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NAME opt_name opt_base { def_name ($2, $3); }
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| LIBRARY opt_name opt_base { def_library ($2, $3); }
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| DESCRIPTION ID { def_description ($2);}
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| STACKSIZE NUMBER opt_number { def_stacksize ($2, $3);}
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| HEAPSIZE NUMBER opt_number { def_heapsize ($2, $3);}
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| CODE attr_list { def_section ("CODE", $2);}
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| DATAU attr_list { def_section ("DATA", $2);}
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| SECTIONS seclist
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| EXPORTS explist
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| IMPORTS implist
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| VERSIONK NUMBER { def_version ($2, 0);}
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| VERSIONK NUMBER '.' NUMBER { def_version ($2, $4);}
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| DIRECTIVE ID { def_directive ($2);}
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;
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explist:
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/* EMPTY */
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| expline
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| explist expline
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;
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expline:
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/* The opt_comma is necessary to support both the usual
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DEF file syntax as well as .drectve syntax which
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mandates <expsym>,<expoptlist>. */
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dot_name opt_equal_name opt_ordinal opt_comma exp_opt_list
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{ def_exports ($1, $2, $3, $5); }
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;
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exp_opt_list:
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/* The opt_comma is necessary to support both the usual
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DEF file syntax as well as .drectve syntax which
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allows for comma separated opt list. */
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exp_opt opt_comma exp_opt_list { $$ = $1 | $3; }
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| { $$ = 0; }
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;
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exp_opt:
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NONAMEU { $$ = 1; }
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| NONAMEL { $$ = 1; }
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| CONSTANTU { $$ = 2; }
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| CONSTANTL { $$ = 2; }
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| DATAU { $$ = 4; }
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| DATAL { $$ = 4; }
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| PRIVATEU { $$ = 8; }
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| PRIVATEL { $$ = 8; }
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;
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implist:
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implist impline
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| impline
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;
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impline:
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ID '=' ID '.' ID '.' ID { def_import ($1, $3, $5, $7, -1); }
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| ID '=' ID '.' ID '.' NUMBER { def_import ($1, $3, $5, 0, $7); }
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| ID '=' ID '.' ID { def_import ($1, $3, 0, $5, -1); }
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| ID '=' ID '.' NUMBER { def_import ($1, $3, 0, 0, $5); }
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| ID '.' ID '.' ID { def_import ( 0, $1, $3, $5, -1); }
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| ID '.' ID { def_import ( 0, $1, 0, $3, -1); }
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;
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seclist:
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seclist secline
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| secline
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;
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secline:
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ID attr_list { def_section ($1, $2);}
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| ID ID { def_section_alt ($1, $2);}
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;
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attr_list:
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attr_list opt_comma attr { $$ = $1 | $3; }
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| attr { $$ = $1; }
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;
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opt_comma:
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','
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;
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opt_number: ',' NUMBER { $$=$2;}
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| { $$=-1;}
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;
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attr:
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READ { $$ = 1;}
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| WRITE { $$ = 2;}
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| EXECUTE { $$=4;}
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| SHARED { $$=8;}
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;
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opt_name: ID { $$ = $1; }
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| ID '.' ID
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{
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char * name = xmalloc (strlen ($1) + 1 + strlen ($3) + 1);
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sprintf (name, "%s.%s", $1, $3);
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$$ = name;
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}
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| { $$ = ""; }
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;
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opt_ordinal:
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'@' NUMBER { $$ = $2;}
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| { $$ = -1;}
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;
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opt_equal_name:
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'=' dot_name { $$ = $2; }
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| { $$ = 0; }
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;
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opt_base: BASE '=' NUMBER { $$ = $3;}
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| { $$ = -1;}
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;
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dot_name: ID { $$ = $1; }
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| dot_name '.' ID
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{
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char * name = xmalloc (strlen ($1) + 1 + strlen ($3) + 1);
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sprintf (name, "%s.%s", $1, $3);
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$$ = name;
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}
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;
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%%
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/*****************************************************************************
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API
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*****************************************************************************/
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static FILE *the_file;
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static const char *def_filename;
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static int linenumber;
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static def_file *def;
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static int saw_newline;
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struct directive
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{
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struct directive *next;
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char *name;
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int len;
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};
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static struct directive *directives = 0;
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def_file *
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def_file_empty ()
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{
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def_file *rv = (def_file *) xmalloc (sizeof (def_file));
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memset (rv, 0, sizeof (def_file));
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rv->is_dll = -1;
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rv->base_address = (bfd_vma) (-1);
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rv->stack_reserve = rv->stack_commit = -1;
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rv->heap_reserve = rv->heap_commit = -1;
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rv->version_major = rv->version_minor = -1;
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return rv;
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}
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def_file *
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def_file_parse (filename, add_to)
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const char *filename;
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def_file *add_to;
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{
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struct directive *d;
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the_file = fopen (filename, "r");
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def_filename = filename;
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linenumber = 1;
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if (!the_file)
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{
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perror (filename);
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return 0;
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}
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if (add_to)
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{
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def = add_to;
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}
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else
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{
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def = def_file_empty ();
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}
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saw_newline = 1;
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if (def_parse ())
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{
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def_file_free (def);
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fclose (the_file);
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return 0;
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}
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fclose (the_file);
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for (d = directives; d; d = d->next)
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{
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#if TRACE
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printf ("Adding directive %08x `%s'\n", d->name, d->name);
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#endif
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def_file_add_directive (def, d->name, d->len);
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}
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return def;
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}
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void
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def_file_free (def)
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def_file *def;
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{
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int i;
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if (!def)
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return;
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if (def->name)
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free (def->name);
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if (def->description)
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free (def->description);
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if (def->section_defs)
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{
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for (i = 0; i < def->num_section_defs; i++)
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{
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if (def->section_defs[i].name)
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free (def->section_defs[i].name);
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if (def->section_defs[i].class)
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free (def->section_defs[i].class);
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}
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free (def->section_defs);
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}
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if (def->exports)
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{
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for (i = 0; i < def->num_exports; i++)
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{
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if (def->exports[i].internal_name
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&& def->exports[i].internal_name != def->exports[i].name)
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free (def->exports[i].internal_name);
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if (def->exports[i].name)
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free (def->exports[i].name);
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}
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free (def->exports);
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}
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if (def->imports)
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{
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for (i = 0; i < def->num_imports; i++)
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{
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if (def->imports[i].internal_name
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&& def->imports[i].internal_name != def->imports[i].name)
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free (def->imports[i].internal_name);
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if (def->imports[i].name)
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free (def->imports[i].name);
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}
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free (def->imports);
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}
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while (def->modules)
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{
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def_file_module *m = def->modules;
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def->modules = def->modules->next;
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free (m);
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}
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free (def);
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}
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#ifdef DEF_FILE_PRINT
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void
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def_file_print (file, def)
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FILE *file;
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def_file *def;
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{
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int i;
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fprintf (file, ">>>> def_file at 0x%08x\n", def);
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if (def->name)
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fprintf (file, " name: %s\n", def->name ? def->name : "(unspecified)");
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if (def->is_dll != -1)
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fprintf (file, " is dll: %s\n", def->is_dll ? "yes" : "no");
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if (def->base_address != (bfd_vma) (-1))
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fprintf (file, " base address: 0x%08x\n", def->base_address);
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if (def->description)
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fprintf (file, " description: `%s'\n", def->description);
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if (def->stack_reserve != -1)
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fprintf (file, " stack reserve: 0x%08x\n", def->stack_reserve);
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if (def->stack_commit != -1)
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fprintf (file, " stack commit: 0x%08x\n", def->stack_commit);
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if (def->heap_reserve != -1)
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fprintf (file, " heap reserve: 0x%08x\n", def->heap_reserve);
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if (def->heap_commit != -1)
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fprintf (file, " heap commit: 0x%08x\n", def->heap_commit);
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if (def->num_section_defs > 0)
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{
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fprintf (file, " section defs:\n");
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for (i = 0; i < def->num_section_defs; i++)
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{
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fprintf (file, " name: `%s', class: `%s', flags:",
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def->section_defs[i].name, def->section_defs[i].class);
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if (def->section_defs[i].flag_read)
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fprintf (file, " R");
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if (def->section_defs[i].flag_write)
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fprintf (file, " W");
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if (def->section_defs[i].flag_execute)
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fprintf (file, " X");
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if (def->section_defs[i].flag_shared)
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fprintf (file, " S");
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fprintf (file, "\n");
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}
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}
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if (def->num_exports > 0)
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{
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fprintf (file, " exports:\n");
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for (i = 0; i < def->num_exports; i++)
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{
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fprintf (file, " name: `%s', int: `%s', ordinal: %d, flags:",
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def->exports[i].name, def->exports[i].internal_name,
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def->exports[i].ordinal);
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if (def->exports[i].flag_private)
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fprintf (file, " P");
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if (def->exports[i].flag_constant)
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fprintf (file, " C");
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if (def->exports[i].flag_noname)
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fprintf (file, " N");
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if (def->exports[i].flag_data)
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fprintf (file, " D");
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fprintf (file, "\n");
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}
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}
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|
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if (def->num_imports > 0)
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{
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fprintf (file, " imports:\n");
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for (i = 0; i < def->num_imports; i++)
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{
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fprintf (file, " int: %s, from: `%s', name: `%s', ordinal: %d\n",
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def->imports[i].internal_name,
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def->imports[i].module,
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def->imports[i].name,
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def->imports[i].ordinal);
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}
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}
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|
if (def->version_major != -1)
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|
fprintf (file, " version: %d.%d\n", def->version_major, def->version_minor);
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|
fprintf (file, "<<<< def_file at 0x%08x\n", def);
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|
}
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|
#endif
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|
|
def_file_export *
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|
def_file_add_export (def, external_name, internal_name, ordinal)
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|
def_file *def;
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const char *external_name;
|
|
const char *internal_name;
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|
int ordinal;
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|
{
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|
def_file_export *e;
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int max_exports = ROUND_UP(def->num_exports, 32);
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|
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if (def->num_exports >= max_exports)
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{
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max_exports = ROUND_UP(def->num_exports + 1, 32);
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if (def->exports)
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|
def->exports = (def_file_export *)
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xrealloc (def->exports, max_exports * sizeof (def_file_export));
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else
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def->exports = (def_file_export *)
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xmalloc (max_exports * sizeof (def_file_export));
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}
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|
e = def->exports + def->num_exports;
|
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memset (e, 0, sizeof (def_file_export));
|
|
if (internal_name && !external_name)
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external_name = internal_name;
|
|
if (external_name && !internal_name)
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internal_name = external_name;
|
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e->name = xstrdup (external_name);
|
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e->internal_name = xstrdup (internal_name);
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e->ordinal = ordinal;
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def->num_exports++;
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return e;
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}
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|
|
|
def_file_module *
|
|
def_get_module (def, name)
|
|
def_file *def;
|
|
const char *name;
|
|
{
|
|
def_file_module *s;
|
|
|
|
for (s = def->modules; s; s = s->next)
|
|
if (strcmp (s->name, name) == 0)
|
|
return s;
|
|
|
|
return (def_file_module *) 0;
|
|
}
|
|
|
|
static def_file_module *
|
|
def_stash_module (def, name)
|
|
def_file *def;
|
|
const char *name;
|
|
{
|
|
def_file_module *s;
|
|
|
|
if ((s = def_get_module (def, name)) != (def_file_module *) 0)
|
|
return s;
|
|
s = (def_file_module *) xmalloc (sizeof (def_file_module) + strlen (name));
|
|
s->next = def->modules;
|
|
def->modules = s;
|
|
s->user_data = 0;
|
|
strcpy (s->name, name);
|
|
return s;
|
|
}
|
|
|
|
def_file_import *
|
|
def_file_add_import (def, name, module, ordinal, internal_name)
|
|
def_file *def;
|
|
const char *name;
|
|
const char *module;
|
|
int ordinal;
|
|
const char *internal_name;
|
|
{
|
|
def_file_import *i;
|
|
int max_imports = ROUND_UP(def->num_imports, 16);
|
|
|
|
if (def->num_imports >= max_imports)
|
|
{
|
|
max_imports = ROUND_UP(def->num_imports+1, 16);
|
|
|
|
if (def->imports)
|
|
def->imports = (def_file_import *)
|
|
xrealloc (def->imports, max_imports * sizeof (def_file_import));
|
|
else
|
|
def->imports = (def_file_import *)
|
|
xmalloc (max_imports * sizeof (def_file_import));
|
|
}
|
|
i = def->imports + def->num_imports;
|
|
memset (i, 0, sizeof (def_file_import));
|
|
if (name)
|
|
i->name = xstrdup (name);
|
|
if (module)
|
|
i->module = def_stash_module (def, module);
|
|
i->ordinal = ordinal;
|
|
if (internal_name)
|
|
i->internal_name = xstrdup (internal_name);
|
|
else
|
|
i->internal_name = i->name;
|
|
def->num_imports++;
|
|
|
|
return i;
|
|
}
|
|
|
|
struct
|
|
{
|
|
char *param;
|
|
int token;
|
|
}
|
|
diropts[] =
|
|
{
|
|
{ "-heap", HEAPSIZE },
|
|
{ "-stack", STACKSIZE },
|
|
{ "-attr", SECTIONS },
|
|
{ "-export", EXPORTS },
|
|
{ 0, 0 }
|
|
};
|
|
|
|
void
|
|
def_file_add_directive (my_def, param, len)
|
|
def_file *my_def;
|
|
const char *param;
|
|
int len;
|
|
{
|
|
def_file *save_def = def;
|
|
const char *pend = param + len;
|
|
const char *tend = param;
|
|
int i;
|
|
|
|
def = my_def;
|
|
|
|
while (param < pend)
|
|
{
|
|
while (param < pend && ISSPACE (*param))
|
|
param++;
|
|
|
|
for (tend = param + 1;
|
|
tend < pend && !(ISSPACE (tend[-1]) && *tend == '-');
|
|
tend++)
|
|
;
|
|
|
|
for (i = 0; diropts[i].param; i++)
|
|
{
|
|
int len = strlen (diropts[i].param);
|
|
|
|
if (tend - param >= len
|
|
&& strncmp (param, diropts[i].param, len) == 0
|
|
&& (param[len] == ':' || param[len] == ' '))
|
|
{
|
|
lex_parse_string_end = tend;
|
|
lex_parse_string = param + len + 1;
|
|
lex_forced_token = diropts[i].token;
|
|
saw_newline = 0;
|
|
def_parse ();
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!diropts[i].param)
|
|
/* xgettext:c-format */
|
|
einfo (_("Warning: .drectve `%.*s' unrecognized\n"),
|
|
tend - param, param);
|
|
|
|
lex_parse_string = 0;
|
|
param = tend;
|
|
}
|
|
|
|
def = save_def;
|
|
}
|
|
|
|
/* Parser Callbacks. */
|
|
|
|
static void
|
|
def_name (name, base)
|
|
const char *name;
|
|
int base;
|
|
{
|
|
if (def->name)
|
|
free (def->name);
|
|
def->name = xstrdup (name);
|
|
def->base_address = base;
|
|
def->is_dll = 0;
|
|
}
|
|
|
|
static void
|
|
def_library (name, base)
|
|
const char *name;
|
|
int base;
|
|
{
|
|
if (def->name)
|
|
free (def->name);
|
|
def->name = xstrdup (name);
|
|
def->base_address = base;
|
|
def->is_dll = 1;
|
|
}
|
|
|
|
static void
|
|
def_description (text)
|
|
const char *text;
|
|
{
|
|
int len = def->description ? strlen (def->description) : 0;
|
|
|
|
len += strlen (text) + 1;
|
|
if (def->description)
|
|
{
|
|
def->description = (char *) xrealloc (def->description, len);
|
|
strcat (def->description, text);
|
|
}
|
|
else
|
|
{
|
|
def->description = (char *) xmalloc (len);
|
|
strcpy (def->description, text);
|
|
}
|
|
}
|
|
|
|
static void
|
|
def_stacksize (reserve, commit)
|
|
int reserve;
|
|
int commit;
|
|
{
|
|
def->stack_reserve = reserve;
|
|
def->stack_commit = commit;
|
|
}
|
|
|
|
static void
|
|
def_heapsize (reserve, commit)
|
|
int reserve;
|
|
int commit;
|
|
{
|
|
def->heap_reserve = reserve;
|
|
def->heap_commit = commit;
|
|
}
|
|
|
|
static void
|
|
def_section (name, attr)
|
|
const char *name;
|
|
int attr;
|
|
{
|
|
def_file_section *s;
|
|
int max_sections = ROUND_UP(def->num_section_defs, 4);
|
|
|
|
if (def->num_section_defs >= max_sections)
|
|
{
|
|
max_sections = ROUND_UP(def->num_section_defs+1, 4);
|
|
|
|
if (def->section_defs)
|
|
def->section_defs = (def_file_section *) xrealloc (def->section_defs, max_sections * sizeof (def_file_import));
|
|
else
|
|
def->section_defs = (def_file_section *) xmalloc (max_sections * sizeof (def_file_import));
|
|
}
|
|
s = def->section_defs + def->num_section_defs;
|
|
memset (s, 0, sizeof (def_file_section));
|
|
s->name = xstrdup (name);
|
|
if (attr & 1)
|
|
s->flag_read = 1;
|
|
if (attr & 2)
|
|
s->flag_write = 1;
|
|
if (attr & 4)
|
|
s->flag_execute = 1;
|
|
if (attr & 8)
|
|
s->flag_shared = 1;
|
|
|
|
def->num_section_defs++;
|
|
}
|
|
|
|
static void
|
|
def_section_alt (name, attr)
|
|
const char *name;
|
|
const char *attr;
|
|
{
|
|
int aval = 0;
|
|
|
|
for (; *attr; attr++)
|
|
{
|
|
switch (*attr)
|
|
{
|
|
case 'R':
|
|
case 'r':
|
|
aval |= 1;
|
|
break;
|
|
case 'W':
|
|
case 'w':
|
|
aval |= 2;
|
|
break;
|
|
case 'X':
|
|
case 'x':
|
|
aval |= 4;
|
|
break;
|
|
case 'S':
|
|
case 's':
|
|
aval |= 8;
|
|
break;
|
|
}
|
|
}
|
|
def_section (name, aval);
|
|
}
|
|
|
|
static void
|
|
def_exports (external_name, internal_name, ordinal, flags)
|
|
const char *external_name;
|
|
const char *internal_name;
|
|
int ordinal;
|
|
int flags;
|
|
{
|
|
def_file_export *dfe;
|
|
|
|
if (!internal_name && external_name)
|
|
internal_name = external_name;
|
|
#if TRACE
|
|
printf ("def_exports, ext=%s int=%s\n", external_name, internal_name);
|
|
#endif
|
|
|
|
dfe = def_file_add_export (def, external_name, internal_name, ordinal);
|
|
if (flags & 1)
|
|
dfe->flag_noname = 1;
|
|
if (flags & 2)
|
|
dfe->flag_constant = 1;
|
|
if (flags & 4)
|
|
dfe->flag_data = 1;
|
|
if (flags & 8)
|
|
dfe->flag_private = 1;
|
|
}
|
|
|
|
static void
|
|
def_import (internal_name, module, dllext, name, ordinal)
|
|
const char *internal_name;
|
|
const char *module;
|
|
const char *dllext;
|
|
const char *name;
|
|
int ordinal;
|
|
{
|
|
char *buf = 0;
|
|
const char *ext = dllext ? dllext : "dll";
|
|
|
|
buf = (char *) xmalloc (strlen (module) + strlen (ext) + 2);
|
|
sprintf (buf, "%s.%s", module, ext);
|
|
module = buf;
|
|
|
|
def_file_add_import (def, name, module, ordinal, internal_name);
|
|
if (buf)
|
|
free (buf);
|
|
}
|
|
|
|
static void
|
|
def_version (major, minor)
|
|
int major;
|
|
int minor;
|
|
{
|
|
def->version_major = major;
|
|
def->version_minor = minor;
|
|
}
|
|
|
|
static void
|
|
def_directive (str)
|
|
char *str;
|
|
{
|
|
struct directive *d = (struct directive *) xmalloc (sizeof (struct directive));
|
|
|
|
d->next = directives;
|
|
directives = d;
|
|
d->name = xstrdup (str);
|
|
d->len = strlen (str);
|
|
}
|
|
|
|
static int
|
|
def_error (err)
|
|
const char *err;
|
|
{
|
|
einfo ("%P: %s:%d: %s\n", def_filename, linenumber, err);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Lexical Scanner. */
|
|
|
|
#undef TRACE
|
|
#define TRACE 0
|
|
|
|
/* Never freed, but always reused as needed, so no real leak. */
|
|
static char *buffer = 0;
|
|
static int buflen = 0;
|
|
static int bufptr = 0;
|
|
|
|
static void
|
|
put_buf (c)
|
|
char c;
|
|
{
|
|
if (bufptr == buflen)
|
|
{
|
|
buflen += 50; /* overly reasonable, eh? */
|
|
if (buffer)
|
|
buffer = (char *) xrealloc (buffer, buflen + 1);
|
|
else
|
|
buffer = (char *) xmalloc (buflen + 1);
|
|
}
|
|
buffer[bufptr++] = c;
|
|
buffer[bufptr] = 0; /* not optimal, but very convenient. */
|
|
}
|
|
|
|
static struct
|
|
{
|
|
char *name;
|
|
int token;
|
|
}
|
|
tokens[] =
|
|
{
|
|
{ "BASE", BASE },
|
|
{ "CODE", CODE },
|
|
{ "CONSTANT", CONSTANTU },
|
|
{ "constant", CONSTANTL },
|
|
{ "DATA", DATAU },
|
|
{ "data", DATAL },
|
|
{ "DESCRIPTION", DESCRIPTION },
|
|
{ "DIRECTIVE", DIRECTIVE },
|
|
{ "EXECUTE", EXECUTE },
|
|
{ "EXPORTS", EXPORTS },
|
|
{ "HEAPSIZE", HEAPSIZE },
|
|
{ "IMPORTS", IMPORTS },
|
|
{ "LIBRARY", LIBRARY },
|
|
{ "NAME", NAME },
|
|
{ "NONAME", NONAMEU },
|
|
{ "noname", NONAMEL },
|
|
{ "PRIVATE", PRIVATEU },
|
|
{ "private", PRIVATEL },
|
|
{ "READ", READ },
|
|
{ "SECTIONS", SECTIONS },
|
|
{ "SEGMENTS", SECTIONS },
|
|
{ "SHARED", SHARED },
|
|
{ "STACKSIZE", STACKSIZE },
|
|
{ "VERSION", VERSIONK },
|
|
{ "WRITE", WRITE },
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static int
|
|
def_getc ()
|
|
{
|
|
int rv;
|
|
|
|
if (lex_parse_string)
|
|
{
|
|
if (lex_parse_string >= lex_parse_string_end)
|
|
rv = EOF;
|
|
else
|
|
rv = *lex_parse_string++;
|
|
}
|
|
else
|
|
{
|
|
rv = fgetc (the_file);
|
|
}
|
|
if (rv == '\n')
|
|
saw_newline = 1;
|
|
return rv;
|
|
}
|
|
|
|
static int
|
|
def_ungetc (c)
|
|
int c;
|
|
{
|
|
if (lex_parse_string)
|
|
{
|
|
lex_parse_string--;
|
|
return c;
|
|
}
|
|
else
|
|
return ungetc (c, the_file);
|
|
}
|
|
|
|
static int
|
|
def_lex ()
|
|
{
|
|
int c, i, q;
|
|
|
|
if (lex_forced_token)
|
|
{
|
|
i = lex_forced_token;
|
|
lex_forced_token = 0;
|
|
#if TRACE
|
|
printf ("lex: forcing token %d\n", i);
|
|
#endif
|
|
return i;
|
|
}
|
|
|
|
c = def_getc ();
|
|
|
|
/* Trim leading whitespace. */
|
|
while (c != EOF && (c == ' ' || c == '\t') && saw_newline)
|
|
c = def_getc ();
|
|
|
|
if (c == EOF)
|
|
{
|
|
#if TRACE
|
|
printf ("lex: EOF\n");
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
if (saw_newline && c == ';')
|
|
{
|
|
do
|
|
{
|
|
c = def_getc ();
|
|
}
|
|
while (c != EOF && c != '\n');
|
|
if (c == '\n')
|
|
return def_lex ();
|
|
return 0;
|
|
}
|
|
|
|
/* Must be something else. */
|
|
saw_newline = 0;
|
|
|
|
if (ISDIGIT (c))
|
|
{
|
|
bufptr = 0;
|
|
while (c != EOF && (ISXDIGIT (c) || (c == 'x')))
|
|
{
|
|
put_buf (c);
|
|
c = def_getc ();
|
|
}
|
|
if (c != EOF)
|
|
def_ungetc (c);
|
|
yylval.number = strtoul (buffer, 0, 0);
|
|
#if TRACE
|
|
printf ("lex: `%s' returns NUMBER %d\n", buffer, yylval.number);
|
|
#endif
|
|
return NUMBER;
|
|
}
|
|
|
|
if (ISALPHA (c) || strchr ("$:-_?@", c))
|
|
{
|
|
bufptr = 0;
|
|
q = c;
|
|
put_buf (c);
|
|
c = def_getc ();
|
|
|
|
if (q == '@')
|
|
{
|
|
if (ISBLANK (c) ) /* '@' followed by whitespace. */
|
|
return (q);
|
|
else if (ISDIGIT (c)) /* '@' followed by digit. */
|
|
{
|
|
def_ungetc (c);
|
|
return (q);
|
|
}
|
|
#if TRACE
|
|
printf ("lex: @ returns itself\n");
|
|
#endif
|
|
}
|
|
|
|
while (c != EOF && (ISALNUM (c) || strchr ("$:-_?/@", c)))
|
|
{
|
|
put_buf (c);
|
|
c = def_getc ();
|
|
}
|
|
if (c != EOF)
|
|
def_ungetc (c);
|
|
if (ISALPHA (q)) /* Check for tokens. */
|
|
{
|
|
for (i = 0; tokens[i].name; i++)
|
|
if (strcmp (tokens[i].name, buffer) == 0)
|
|
{
|
|
#if TRACE
|
|
printf ("lex: `%s' is a string token\n", buffer);
|
|
#endif
|
|
return tokens[i].token;
|
|
}
|
|
}
|
|
#if TRACE
|
|
printf ("lex: `%s' returns ID\n", buffer);
|
|
#endif
|
|
yylval.id = xstrdup (buffer);
|
|
return ID;
|
|
}
|
|
|
|
if (c == '\'' || c == '"')
|
|
{
|
|
q = c;
|
|
c = def_getc ();
|
|
bufptr = 0;
|
|
|
|
while (c != EOF && c != q)
|
|
{
|
|
put_buf (c);
|
|
c = def_getc ();
|
|
}
|
|
yylval.id = xstrdup (buffer);
|
|
#if TRACE
|
|
printf ("lex: `%s' returns ID\n", buffer);
|
|
#endif
|
|
return ID;
|
|
}
|
|
|
|
if (c == '=' || c == '.' || c == ',')
|
|
{
|
|
#if TRACE
|
|
printf ("lex: `%c' returns itself\n", c);
|
|
#endif
|
|
return c;
|
|
}
|
|
|
|
if (c == '\n')
|
|
{
|
|
linenumber++;
|
|
saw_newline = 1;
|
|
}
|
|
|
|
/*printf ("lex: 0x%02x ignored\n", c); */
|
|
return def_lex ();
|
|
}
|