694 lines
13 KiB
Plaintext
694 lines
13 KiB
Plaintext
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%{
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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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* $Log$
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* Revision 1.1 1991/03/21 21:28:41 gumby
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* Initial revision
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*
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* Revision 1.2 1991/03/16 22:27:24 rich
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* fish
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*
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* Revision 1.1 1991/03/13 00:48:21 chrisb
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* Initial revision
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*
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* Revision 1.6 1991/03/10 09:31:26 rich
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* Modified Files:
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* Makefile config.h ld-emul.c ld-emul.h ld-gld.c ld-gld960.c
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* ld-lnk960.c ld.h lddigest.c ldexp.c ldexp.h ldfile.c ldfile.h
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* ldgram.y ldinfo.h ldlang.c ldlang.h ldlex.h ldlex.l ldmain.c
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* ldmain.h ldmisc.c ldmisc.h ldsym.c ldsym.h ldversion.c
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* ldversion.h ldwarn.h ldwrite.c ldwrite.h y.tab.h
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*
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* As of this round of changes, ld now builds on all hosts of (Intel960)
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* interest and copy passes my copy test on big endian hosts again.
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*
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* Revision 1.5 1991/03/09 03:25:48 sac
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* Can now parse the -Ur flag
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*
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* Revision 1.4 1991/03/06 02:26:01 sac
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* Added support for constructor sections.
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* Remove parsing ambiguity.
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* Lint
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*
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* Revision 1.3 1991/02/22 17:15:13 sac
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* Added RCS keywords and copyrights
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*
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*/
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/*
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This is a YACC grammer intended to parse a superset of the AT&T
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linker scripting languaue.
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Written by Steve Chamberlain steve@cygnus.com
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*/
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/*SUPPRESS 166*/
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/*SUPPRESS 112*/
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#include "sysdep.h"
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#include "bfd.h"
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#include "ld.h"
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#include "ldexp.h"
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#include "ldversion.h"
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#include "ldlang.h"
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#include "ld-emul.h"
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#include "ldfile.h"
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#include "ldmisc.h"
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#define YYDEBUG 1
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boolean option_v;
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extern unsigned int lineno;
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extern boolean trace_files;
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extern boolean write_map;
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boolean hex_mode;
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lang_memory_region_type *region;
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lang_memory_region_type *lang_memory_region_lookup();
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lang_output_section_statement_type *lang_output_section_statement_lookup();
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#ifdef __STDC__
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void lang_add_data(int type, union etree_union *exp);
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void lang_enter_output_section_statement(char *output_section_statement_name, etree_type *address_exp, bfd_vma block_value);
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#else
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void lang_add_data();
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void lang_enter_output_section_statement();
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#endif /* __STDC__ */
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extern args_type command_line;
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char *current_file;
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boolean ldgram_want_filename = true;
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boolean had_script = false;
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boolean force_make_executable = false;
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boolean ldgram_mustbe_filename = false;
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boolean ldgram_mustbe_symbolname = false;
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boolean ldgram_has_inputfile = false;
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/* LOCALS */
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%}
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%union {
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bfd_vma integer;
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int voidval;
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char *name;
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int token;
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union etree_union *etree;
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asection *section;
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struct lang_output_section_statement_struct *output_section_statement;
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union lang_statement_union **statement_ptr;
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int lineno;
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struct {
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FILE *file;
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char *name;
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unsigned int lineno;
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} state;
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}
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%type <etree> exp opt_exp exp_head
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%type <integer> fill_opt opt_block
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%type <name> memspec_opt
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%token <integer> INT CHAR
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%token <name> NAME
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%type <integer> length
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%right <token> PLUSEQ MINUSEQ MULTEQ DIVEQ '=' LSHIFTEQ RSHIFTEQ ANDEQ OREQ
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%right <token> '?' ':'
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%left <token> OROR
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%left <token> ANDAND
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%left <token> '|'
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%left <token> '^'
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%left <token> '&'
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%left <token> EQ NE
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%left <token> '<' '>' LE GE
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%left <token> LSHIFT RSHIFT
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%left <token> '+' '-'
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%left <token> '*' '/' '%'
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%right UNARY
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%left <token> '('
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%token <token> ALIGN_K BLOCK LONG SHORT BYTE
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%token SECTIONS
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%token '{' '}'
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%token ALIGNMENT SIZEOF_HEADERS
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%token NEXT SIZEOF ADDR
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%token MEMORY
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%token DSECT NOLOAD COPY INFO OVERLAY
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%token NAME DEFINED TARGET_K SEARCH_DIR MAP ENTRY
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%token OPTION_e OPTION_c OPTION_noinhibit_exec OPTION_s OPTION_S OPTION_format
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%token OPTION_d OPTION_dc OPTION_dp OPTION_x OPTION_X
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%token OPTION_v OPTION_M OPTION_t STARTUP HLL SYSLIB FLOAT NOFLOAT OPTION_defsym
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%token OPTION_n OPTION_r OPTION_o OPTION_b OPTION_A
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%token <name> OPTION_l OPTION_L OPTION_T OPTION_Aarch OPTION_Tfile OPTION_Texp
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%token OPTION_Ur
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%token ORIGIN FILL OPTION_g
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%token LENGTH BIND SUBSECTION_ALIGN CREATE_OBJECT_SYMBOLS INPUT OUTPUT
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%type <token> assign_op SIZEOF NEXT ADDR
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%type <etree> assignment
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%type <name> filename
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%{
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ld_config_type config;
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%}
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%%
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file: command_line { lang_final(); };
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filename:
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{
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ldgram_mustbe_filename =true;
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}
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NAME
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{
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ldgram_mustbe_filename = false;
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$$ = $2;
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}
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command_line:
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command_line command_line_option
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;
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command_line_option:
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OPTION_v
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{
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ldversion();
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option_v = true;
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}
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| OPTION_t {
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trace_files = true;
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}
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| OPTION_M {
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write_map = true;
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}
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| OPTION_n {
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config.magic_demand_paged = false;
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config.make_executable = false;
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}
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| OPTION_s {
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strip_symbols = STRIP_ALL;
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}
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| OPTION_S {
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strip_symbols = STRIP_DEBUGGER;
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}
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| OPTION_r {
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config.relocateable_output = true;
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config.build_constructors = false;
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config.magic_demand_paged = false;
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}
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| OPTION_Ur {
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config.relocateable_output = true;
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config.build_constructors = true;
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config.magic_demand_paged = false;
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}
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| OPTION_o filename
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{
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lang_add_output($2);
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}
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| OPTION_e NAME
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{ lang_add_entry($2);
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}
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| OPTION_X {
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discard_locals = DISCARD_L;
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}
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| OPTION_x {
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discard_locals = DISCARD_ALL;
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}
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| OPTION_noinhibit_exec
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{
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force_make_executable = true;
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}
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| OPTION_d {
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command_line.force_common_definition = true;
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}
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| OPTION_dc
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{
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command_line.force_common_definition = true;
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}
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| OPTION_g
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{
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/* Ignored */
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}
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| OPTION_dp
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{
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command_line.force_common_definition = true;
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}
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| OPTION_format NAME
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{
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lang_add_target($2);
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}
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| OPTION_Texp { hex_mode =true; }
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exp_head
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{ lang_section_start($1, $3);
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hex_mode = false; }
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| OPTION_Aarch
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{ ldfile_add_arch($1); }
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| OPTION_b NAME
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{
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lang_add_target($2);
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}
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| OPTION_L
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{
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ldfile_add_library_path($1);
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}
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| ifile_p1
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| input_list
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| OPTION_c filename
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{ ldfile_open_command_file($2); }
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| OPTION_Tfile
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{ ldfile_open_command_file($1); }
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| OPTION_T filename
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{ ldfile_open_command_file($2); }
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| OPTION_l
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{
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lang_add_input_file($1,
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lang_input_file_is_l_enum,
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(char *)NULL);
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}
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| OPTION_A filename
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{
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lang_add_input_file($2,
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lang_input_file_is_symbols_only_enum,
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(char *)NULL);
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}
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| OPTION_defsym assignment_with_nospaces
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;
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input_section_spec:
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NAME
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{
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lang_add_wild((char *)NULL, $1);
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}
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| '['
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{
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current_file = (char *)NULL;
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}
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file_NAME_list
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']'
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| NAME
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{
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current_file =$1;
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}
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'(' file_NAME_list ')'
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| '*'
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{
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current_file = (char *)NULL;
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}
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'(' file_NAME_list ')'
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;
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file_NAME_list:
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NAME
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{ lang_add_wild($1, current_file); }
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| file_NAME_list opt_comma NAME
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{ lang_add_wild($3, current_file); }
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;
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ifile_p1:
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memory
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| sections
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| startup
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| high_level_library
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| low_level_library
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| floating_point_support
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| assignment end
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| TARGET_K '(' NAME ')'
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{ lang_add_target($3); }
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| SEARCH_DIR '(' filename ')'
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{ ldfile_add_library_path($3); }
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| OUTPUT '(' filename ')'
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{ lang_add_output($3); }
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| INPUT '(' input_list ')'
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| MAP '(' filename ')'
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{ lang_add_map($3); }
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;
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input_list:
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NAME
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{ lang_add_input_file($1,lang_input_file_is_file_enum,
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(char *)NULL); }
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| input_list ',' NAME
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{ lang_add_input_file($3,lang_input_file_is_file_enum,
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(char *)NULL); }
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| input_list NAME
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{ lang_add_input_file($2, lang_input_file_is_file_enum,
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(char *)NULL); }
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;
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sections:
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SECTIONS '{'sec_or_group_p1 '}'
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;
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sec_or_group_p1:
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sec_or_group_p1 section
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| sec_or_group_p1 statement_anywhere
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;
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statement_anywhere:
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ENTRY '(' NAME ')'
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{ lang_add_entry($3); }
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| assignment end
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;
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statement:
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statement assignment end
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| statement CREATE_OBJECT_SYMBOLS
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|
|
{ lang_add_attribute(lang_object_symbols_statement_enum); }
|
||
|
|
| statement input_section_spec
|
||
|
|
| statement length '(' exp_head ')'
|
||
|
|
{
|
||
|
|
lang_add_data($2,$4);
|
||
|
|
}
|
||
|
|
|
||
|
|
| statement FILL '(' exp_head ')'
|
||
|
|
{
|
||
|
|
lang_add_fill
|
||
|
|
(exp_get_value_int($4,
|
||
|
|
0,
|
||
|
|
"fill value",
|
||
|
|
lang_first_phase_enum));
|
||
|
|
}
|
||
|
|
|
|
||
|
|
;
|
||
|
|
|
||
|
|
length:
|
||
|
|
LONG
|
||
|
|
{ $$ = $1; }
|
||
|
|
| SHORT
|
||
|
|
{ $$ = $1; }
|
||
|
|
| BYTE
|
||
|
|
{ $$ = $1; }
|
||
|
|
;
|
||
|
|
|
||
|
|
fill_opt:
|
||
|
|
'=' exp_head
|
||
|
|
{
|
||
|
|
$$ = exp_get_value_int($2,
|
||
|
|
0,
|
||
|
|
"fill value",
|
||
|
|
lang_first_phase_enum);
|
||
|
|
}
|
||
|
|
| { $$ = 0; }
|
||
|
|
;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
assign_op:
|
||
|
|
PLUSEQ
|
||
|
|
{ $$ = '+'; }
|
||
|
|
| MINUSEQ
|
||
|
|
{ $$ = '-'; }
|
||
|
|
| MULTEQ
|
||
|
|
{ $$ = '*'; }
|
||
|
|
| DIVEQ
|
||
|
|
{ $$ = '/'; }
|
||
|
|
| LSHIFTEQ
|
||
|
|
{ $$ = LSHIFT; }
|
||
|
|
| RSHIFTEQ
|
||
|
|
{ $$ = RSHIFT; }
|
||
|
|
| ANDEQ
|
||
|
|
{ $$ = '&'; }
|
||
|
|
| OREQ
|
||
|
|
{ $$ = '|'; }
|
||
|
|
|
||
|
|
;
|
||
|
|
|
||
|
|
end: ';' | ','
|
||
|
|
;
|
||
|
|
|
||
|
|
assignment_with_nospaces:
|
||
|
|
{ ldgram_want_filename = false; }
|
||
|
|
assignment
|
||
|
|
{ ldgram_want_filename = true; }
|
||
|
|
;
|
||
|
|
|
||
|
|
assignment:
|
||
|
|
|
||
|
|
NAME '=' exp_head
|
||
|
|
{
|
||
|
|
lang_add_assignment(exp_assop($2,$1,$3));
|
||
|
|
}
|
||
|
|
| NAME assign_op exp_head
|
||
|
|
{
|
||
|
|
lang_add_assignment(exp_assop('=',$1,exp_binop($2,exp_nameop(NAME,$1),$3)));
|
||
|
|
}
|
||
|
|
|
||
|
|
;
|
||
|
|
|
||
|
|
|
||
|
|
opt_comma:
|
||
|
|
',' | ;
|
||
|
|
|
||
|
|
|
||
|
|
memory:
|
||
|
|
MEMORY '{' memory_spec memory_spec_list '}'
|
||
|
|
;
|
||
|
|
|
||
|
|
memory_spec_list:
|
||
|
|
memory_spec_list memory_spec
|
||
|
|
| memory_spec_list ',' memory_spec
|
||
|
|
|
|
||
|
|
;
|
||
|
|
|
||
|
|
|
||
|
|
memory_spec:
|
||
|
|
NAME
|
||
|
|
{ region = lang_memory_region_lookup($1); }
|
||
|
|
attributes_opt ':' origin_spec opt_comma length_spec
|
||
|
|
|
||
|
|
{
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
;
|
||
|
|
origin_spec:
|
||
|
|
ORIGIN '=' exp
|
||
|
|
{ region->current =
|
||
|
|
region->origin =
|
||
|
|
exp_get_vma($3, 0L,"origin", lang_first_phase_enum); }
|
||
|
|
;
|
||
|
|
length_spec:
|
||
|
|
LENGTH '=' exp
|
||
|
|
{ region->length = exp_get_vma($3,
|
||
|
|
~((bfd_vma)0),
|
||
|
|
"length",
|
||
|
|
lang_first_phase_enum);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
attributes_opt:
|
||
|
|
'(' NAME ')'
|
||
|
|
{
|
||
|
|
lang_set_flags(®ion->flags, $2);
|
||
|
|
}
|
||
|
|
|
|
||
|
|
|
||
|
|
;
|
||
|
|
|
||
|
|
startup:
|
||
|
|
STARTUP '(' filename ')'
|
||
|
|
{ lang_startup($3); }
|
||
|
|
;
|
||
|
|
|
||
|
|
high_level_library:
|
||
|
|
HLL '(' high_level_library_NAME_list ')'
|
||
|
|
| HLL '(' ')'
|
||
|
|
{ ldemul_hll((char *)NULL); }
|
||
|
|
;
|
||
|
|
|
||
|
|
high_level_library_NAME_list:
|
||
|
|
high_level_library_NAME_list opt_comma filename
|
||
|
|
{ ldemul_hll($3); }
|
||
|
|
| filename
|
||
|
|
{ ldemul_hll($1); }
|
||
|
|
|
||
|
|
;
|
||
|
|
|
||
|
|
low_level_library:
|
||
|
|
SYSLIB '(' low_level_library_NAME_list ')'
|
||
|
|
;
|
||
|
|
low_level_library_NAME_list:
|
||
|
|
low_level_library_NAME_list opt_comma filename
|
||
|
|
{ ldemul_syslib($3); }
|
||
|
|
|
|
||
|
|
;
|
||
|
|
|
||
|
|
floating_point_support:
|
||
|
|
FLOAT
|
||
|
|
{ lang_float(true); }
|
||
|
|
| NOFLOAT
|
||
|
|
{ lang_float(false); }
|
||
|
|
;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
exp :
|
||
|
|
'-' exp %prec UNARY
|
||
|
|
{ $$ = exp_unop('-', $2); }
|
||
|
|
| '(' exp ')'
|
||
|
|
{ $$ = $2; }
|
||
|
|
| NEXT '(' exp ')' %prec UNARY
|
||
|
|
{ $$ = exp_unop($1,$3); }
|
||
|
|
| '!' exp %prec UNARY
|
||
|
|
{ $$ = exp_unop('!', $2); }
|
||
|
|
| '+' exp %prec UNARY
|
||
|
|
{ $$ = $2; }
|
||
|
|
| '~' exp %prec UNARY
|
||
|
|
{ $$ = exp_unop('~', $2);}
|
||
|
|
|
||
|
|
| exp '*' exp
|
||
|
|
{ $$ = exp_binop('*', $1, $3); }
|
||
|
|
| exp '/' exp
|
||
|
|
{ $$ = exp_binop('/', $1, $3); }
|
||
|
|
| exp '%' exp
|
||
|
|
{ $$ = exp_binop('%', $1, $3); }
|
||
|
|
| exp '+' exp
|
||
|
|
{ $$ = exp_binop('+', $1, $3); }
|
||
|
|
| exp '-' exp
|
||
|
|
{ $$ = exp_binop('-' , $1, $3); }
|
||
|
|
| exp LSHIFT exp
|
||
|
|
{ $$ = exp_binop(LSHIFT , $1, $3); }
|
||
|
|
| exp RSHIFT exp
|
||
|
|
{ $$ = exp_binop(RSHIFT , $1, $3); }
|
||
|
|
| exp EQ exp
|
||
|
|
{ $$ = exp_binop(EQ , $1, $3); }
|
||
|
|
| exp NE exp
|
||
|
|
{ $$ = exp_binop(NE , $1, $3); }
|
||
|
|
| exp LE exp
|
||
|
|
{ $$ = exp_binop(LE , $1, $3); }
|
||
|
|
| exp GE exp
|
||
|
|
{ $$ = exp_binop(GE , $1, $3); }
|
||
|
|
| exp '<' exp
|
||
|
|
{ $$ = exp_binop('<' , $1, $3); }
|
||
|
|
| exp '>' exp
|
||
|
|
{ $$ = exp_binop('>' , $1, $3); }
|
||
|
|
| exp '&' exp
|
||
|
|
{ $$ = exp_binop('&' , $1, $3); }
|
||
|
|
| exp '^' exp
|
||
|
|
{ $$ = exp_binop('^' , $1, $3); }
|
||
|
|
| exp '|' exp
|
||
|
|
{ $$ = exp_binop('|' , $1, $3); }
|
||
|
|
| exp '?' exp ':' exp
|
||
|
|
{ $$ = exp_trinop('?' , $1, $3, $5); }
|
||
|
|
| exp ANDAND exp
|
||
|
|
{ $$ = exp_binop(ANDAND , $1, $3); }
|
||
|
|
| exp OROR exp
|
||
|
|
{ $$ = exp_binop(OROR , $1, $3); }
|
||
|
|
| DEFINED '(' NAME ')'
|
||
|
|
{ $$ = exp_nameop(DEFINED, $3); }
|
||
|
|
| INT
|
||
|
|
{ $$ = exp_intop($1); }
|
||
|
|
|
||
|
|
| SIZEOF '(' NAME ')'
|
||
|
|
{ $$ = exp_nameop($1,$3); }
|
||
|
|
| ADDR '(' NAME ')'
|
||
|
|
{ $$ = exp_nameop($1,$3); }
|
||
|
|
| ALIGN_K '(' exp ')'
|
||
|
|
{ $$ = exp_unop($1,$3); }
|
||
|
|
| NAME
|
||
|
|
{ $$ = exp_nameop(NAME,$1); }
|
||
|
|
;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
section: NAME opt_exp opt_block ':' opt_things'{'
|
||
|
|
{
|
||
|
|
lang_enter_output_section_statement($1,$2,$3);
|
||
|
|
}
|
||
|
|
statement '}' fill_opt memspec_opt
|
||
|
|
{
|
||
|
|
lang_leave_output_section_statement($10, $11);
|
||
|
|
}
|
||
|
|
|
||
|
|
;
|
||
|
|
|
||
|
|
opt_things:
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
;
|
||
|
|
|
||
|
|
exp_head:
|
||
|
|
{ ldgram_mustbe_symbolname = true; }
|
||
|
|
exp
|
||
|
|
{ ldgram_mustbe_symbolname = false;
|
||
|
|
$$ = $2;
|
||
|
|
}
|
||
|
|
|
||
|
|
opt_exp:
|
||
|
|
exp
|
||
|
|
{ $$ = $1; }
|
||
|
|
| { $$= (etree_type *)NULL; }
|
||
|
|
;
|
||
|
|
|
||
|
|
opt_block:
|
||
|
|
BLOCK '(' exp_head ')'
|
||
|
|
{ $$ = exp_get_value_int($3,
|
||
|
|
1L,
|
||
|
|
"block",
|
||
|
|
lang_first_phase_enum);
|
||
|
|
}
|
||
|
|
| { $$ = 1; }
|
||
|
|
;
|
||
|
|
|
||
|
|
memspec_opt:
|
||
|
|
'>' NAME
|
||
|
|
{ $$ = $2; }
|
||
|
|
| { $$ = "*default*"; }
|
||
|
|
;
|
||
|
|
|