1158 lines
23 KiB
Plaintext
1158 lines
23 KiB
Plaintext
/* A YACC grammar to parse a superset of the AT&T linker scripting language.
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Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
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2001, 2002 Free Software Foundation, Inc.
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Written by Steve Chamberlain of Cygnus Support (steve@cygnus.com).
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This file is part of GNU ld.
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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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%{
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/*
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*/
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#define DONTDECLARE_MALLOC
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#include "bfd.h"
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#include "sysdep.h"
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#include "bfdlink.h"
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#include "ld.h"
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#include "ldexp.h"
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#include "ldver.h"
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#include "ldlang.h"
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#include "ldfile.h"
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#include "ldemul.h"
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#include "ldmisc.h"
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#include "ldmain.h"
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#include "mri.h"
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#include "ldctor.h"
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#include "ldlex.h"
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#ifndef YYDEBUG
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#define YYDEBUG 1
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#endif
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static enum section_type sectype;
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lang_memory_region_type *region;
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boolean ldgram_want_filename = true;
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FILE * saved_script_handle = NULL;
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boolean force_make_executable = false;
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boolean ldgram_in_script = false;
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boolean ldgram_had_equals = false;
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boolean ldgram_had_keep = false;
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char *ldgram_vers_current_lang = NULL;
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#define ERROR_NAME_MAX 20
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static char *error_names[ERROR_NAME_MAX];
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static int error_index;
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#define PUSH_ERROR(x) if (error_index < ERROR_NAME_MAX) error_names[error_index] = x; error_index++;
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#define POP_ERROR() error_index--;
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%}
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%union {
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bfd_vma integer;
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struct big_int
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{
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bfd_vma integer;
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char *str;
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} bigint;
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fill_type *fill;
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char *name;
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const char *cname;
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struct wildcard_spec wildcard;
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struct wildcard_list *wildcard_list;
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struct name_list *name_list;
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int token;
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union etree_union *etree;
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struct phdr_info
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{
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boolean filehdr;
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boolean phdrs;
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union etree_union *at;
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union etree_union *flags;
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} phdr;
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struct lang_nocrossref *nocrossref;
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struct lang_output_section_phdr_list *section_phdr;
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struct bfd_elf_version_deps *deflist;
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struct bfd_elf_version_expr *versyms;
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struct bfd_elf_version_tree *versnode;
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}
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%type <etree> exp opt_exp_with_type mustbe_exp opt_at phdr_type phdr_val
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%type <etree> opt_exp_without_type
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%type <fill> fill_opt fill_exp
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%type <name_list> exclude_name_list
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%type <wildcard_list> file_NAME_list
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%type <name> memspec_opt casesymlist
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%type <name> memspec_at_opt
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%type <cname> wildcard_name
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%type <wildcard> wildcard_spec
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%token <bigint> INT
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%token <name> NAME LNAME
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%type <integer> length
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%type <phdr> phdr_qualifiers
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%type <nocrossref> nocrossref_list
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%type <section_phdr> phdr_opt
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%type <integer> opt_nocrossrefs
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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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%token END
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%left <token> '('
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%token <token> ALIGN_K BLOCK BIND QUAD SQUAD LONG SHORT BYTE
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%token SECTIONS PHDRS SORT DATA_SEGMENT_ALIGN DATA_SEGMENT_END
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%token '{' '}'
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%token SIZEOF_HEADERS OUTPUT_FORMAT FORCE_COMMON_ALLOCATION OUTPUT_ARCH
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%token INHIBIT_COMMON_ALLOCATION
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%token SIZEOF_HEADERS
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%token INCLUDE
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%token MEMORY DEFSYMEND
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%token NOLOAD DSECT COPY INFO OVERLAY
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%token NAME LNAME DEFINED TARGET_K SEARCH_DIR MAP ENTRY
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%token <integer> NEXT
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%token SIZEOF ADDR LOADADDR MAX_K MIN_K
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%token STARTUP HLL SYSLIB FLOAT NOFLOAT NOCROSSREFS
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%token ORIGIN FILL
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%token LENGTH CREATE_OBJECT_SYMBOLS INPUT GROUP OUTPUT CONSTRUCTORS
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%token ALIGNMOD AT PROVIDE
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%type <token> assign_op atype attributes_opt
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%type <name> filename
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%token CHIP LIST SECT ABSOLUTE LOAD NEWLINE ENDWORD ORDER NAMEWORD ASSERT_K
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%token FORMAT PUBLIC DEFSYMEND BASE ALIAS TRUNCATE REL
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%token INPUT_SCRIPT INPUT_MRI_SCRIPT INPUT_DEFSYM CASE EXTERN START
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%token <name> VERS_TAG VERS_IDENTIFIER
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%token GLOBAL LOCAL VERSIONK INPUT_VERSION_SCRIPT
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%token KEEP
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%token EXCLUDE_FILE
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%type <versyms> vers_defns
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%type <versnode> vers_tag
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%type <deflist> verdep
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%%
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file:
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INPUT_SCRIPT script_file
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| INPUT_MRI_SCRIPT mri_script_file
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| INPUT_VERSION_SCRIPT version_script_file
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| INPUT_DEFSYM defsym_expr
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;
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filename: NAME;
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defsym_expr:
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{ ldlex_defsym(); }
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NAME '=' exp
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{
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ldlex_popstate();
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lang_add_assignment(exp_assop($3,$2,$4));
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}
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;
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/* SYNTAX WITHIN AN MRI SCRIPT FILE */
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mri_script_file:
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{
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ldlex_mri_script ();
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PUSH_ERROR (_("MRI style script"));
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}
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mri_script_lines
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{
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ldlex_popstate ();
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mri_draw_tree ();
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POP_ERROR ();
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}
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;
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mri_script_lines:
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mri_script_lines mri_script_command NEWLINE
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;
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mri_script_command:
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CHIP exp
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| CHIP exp ',' exp
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| NAME {
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einfo(_("%P%F: unrecognised keyword in MRI style script '%s'\n"),$1);
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}
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| LIST {
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config.map_filename = "-";
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}
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| ORDER ordernamelist
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| ENDWORD
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| PUBLIC NAME '=' exp
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{ mri_public($2, $4); }
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| PUBLIC NAME ',' exp
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{ mri_public($2, $4); }
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| PUBLIC NAME exp
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{ mri_public($2, $3); }
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| FORMAT NAME
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{ mri_format($2); }
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| SECT NAME ',' exp
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{ mri_output_section($2, $4);}
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| SECT NAME exp
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{ mri_output_section($2, $3);}
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| SECT NAME '=' exp
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{ mri_output_section($2, $4);}
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| ALIGN_K NAME '=' exp
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{ mri_align($2,$4); }
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| ALIGN_K NAME ',' exp
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{ mri_align($2,$4); }
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| ALIGNMOD NAME '=' exp
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{ mri_alignmod($2,$4); }
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| ALIGNMOD NAME ',' exp
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{ mri_alignmod($2,$4); }
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| ABSOLUTE mri_abs_name_list
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| LOAD mri_load_name_list
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| NAMEWORD NAME
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{ mri_name($2); }
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| ALIAS NAME ',' NAME
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{ mri_alias($2,$4,0);}
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| ALIAS NAME ',' INT
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{ mri_alias ($2, 0, (int) $4.integer); }
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| BASE exp
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{ mri_base($2); }
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| TRUNCATE INT
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{ mri_truncate ((unsigned int) $2.integer); }
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| CASE casesymlist
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| EXTERN extern_name_list
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| INCLUDE filename
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{ ldlex_script (); ldfile_open_command_file($2); }
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mri_script_lines END
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{ ldlex_popstate (); }
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| START NAME
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{ lang_add_entry ($2, false); }
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;
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ordernamelist:
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ordernamelist ',' NAME { mri_order($3); }
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| ordernamelist NAME { mri_order($2); }
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;
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mri_load_name_list:
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NAME
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{ mri_load($1); }
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| mri_load_name_list ',' NAME { mri_load($3); }
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;
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mri_abs_name_list:
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NAME
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{ mri_only_load($1); }
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| mri_abs_name_list ',' NAME
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{ mri_only_load($3); }
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;
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casesymlist:
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/* empty */ { $$ = NULL; }
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| NAME
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| casesymlist ',' NAME
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;
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extern_name_list:
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NAME
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{ ldlang_add_undef ($1); }
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| extern_name_list NAME
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{ ldlang_add_undef ($2); }
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| extern_name_list ',' NAME
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{ ldlang_add_undef ($3); }
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;
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script_file:
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{
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ldlex_both();
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}
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ifile_list
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{
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ldlex_popstate();
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}
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;
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ifile_list:
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ifile_list ifile_p1
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;
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ifile_p1:
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memory
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| sections
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| phdrs
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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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| statement_anywhere
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| version
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| ';'
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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, false); }
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| OUTPUT '(' filename ')'
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{ lang_add_output($3, 1); }
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| OUTPUT_FORMAT '(' NAME ')'
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{ lang_add_output_format ($3, (char *) NULL,
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(char *) NULL, 1); }
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| OUTPUT_FORMAT '(' NAME ',' NAME ',' NAME ')'
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{ lang_add_output_format ($3, $5, $7, 1); }
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| OUTPUT_ARCH '(' NAME ')'
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{ ldfile_set_output_arch($3); }
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| FORCE_COMMON_ALLOCATION
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{ command_line.force_common_definition = true ; }
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| INHIBIT_COMMON_ALLOCATION
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{ command_line.inhibit_common_definition = true ; }
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| INPUT '(' input_list ')'
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| GROUP
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{ lang_enter_group (); }
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'(' input_list ')'
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{ lang_leave_group (); }
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| MAP '(' filename ')'
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{ lang_add_map($3); }
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| INCLUDE filename
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{ ldlex_script (); ldfile_open_command_file($2); }
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ifile_list END
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{ ldlex_popstate (); }
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| NOCROSSREFS '(' nocrossref_list ')'
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{
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lang_add_nocrossref ($3);
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}
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| EXTERN '(' extern_name_list ')'
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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_search_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_search_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_search_file_enum,
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(char *)NULL); }
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| LNAME
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{ lang_add_input_file($1,lang_input_file_is_l_enum,
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(char *)NULL); }
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| input_list ',' LNAME
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{ lang_add_input_file($3,lang_input_file_is_l_enum,
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(char *)NULL); }
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| input_list LNAME
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{ lang_add_input_file($2,lang_input_file_is_l_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, false); }
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| assignment end
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;
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/* The '*' and '?' cases are there because the lexer returns them as
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separate tokens rather than as NAME. */
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wildcard_name:
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NAME
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{
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$$ = $1;
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}
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| '*'
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{
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$$ = "*";
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}
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| '?'
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{
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$$ = "?";
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}
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;
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wildcard_spec:
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wildcard_name
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{
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$$.name = $1;
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$$.sorted = false;
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$$.exclude_name_list = NULL;
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}
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| EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name
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{
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$$.name = $5;
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$$.sorted = false;
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$$.exclude_name_list = $3;
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}
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| SORT '(' wildcard_name ')'
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{
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$$.name = $3;
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$$.sorted = true;
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$$.exclude_name_list = NULL;
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}
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| SORT '(' EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name ')'
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{
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$$.name = $7;
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$$.sorted = true;
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$$.exclude_name_list = $5;
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}
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;
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exclude_name_list:
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exclude_name_list wildcard_name
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{
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struct name_list *tmp;
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tmp = (struct name_list *) xmalloc (sizeof *tmp);
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tmp->name = $2;
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tmp->next = $1;
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$$ = tmp;
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}
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|
wildcard_name
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{
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struct name_list *tmp;
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tmp = (struct name_list *) xmalloc (sizeof *tmp);
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tmp->name = $1;
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tmp->next = NULL;
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$$ = tmp;
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}
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;
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file_NAME_list:
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file_NAME_list opt_comma wildcard_spec
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{
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struct wildcard_list *tmp;
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tmp = (struct wildcard_list *) xmalloc (sizeof *tmp);
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tmp->next = $1;
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tmp->spec = $3;
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$$ = tmp;
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}
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|
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|
wildcard_spec
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{
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struct wildcard_list *tmp;
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tmp = (struct wildcard_list *) xmalloc (sizeof *tmp);
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tmp->next = NULL;
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tmp->spec = $1;
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$$ = tmp;
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}
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;
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|
input_section_spec_no_keep:
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NAME
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{
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|
struct wildcard_spec tmp;
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tmp.name = $1;
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tmp.exclude_name_list = NULL;
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tmp.sorted = false;
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lang_add_wild (&tmp, NULL, ldgram_had_keep);
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}
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|
| '[' file_NAME_list ']'
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{
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lang_add_wild (NULL, $2, ldgram_had_keep);
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}
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| wildcard_spec '(' file_NAME_list ')'
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{
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lang_add_wild (&$1, $3, ldgram_had_keep);
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}
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|
;
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|
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|
input_section_spec:
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|
input_section_spec_no_keep
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|
| KEEP '('
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{ ldgram_had_keep = true; }
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|
input_section_spec_no_keep ')'
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{ ldgram_had_keep = false; }
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|
;
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|
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|
statement:
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assignment end
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|
| CREATE_OBJECT_SYMBOLS
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{
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lang_add_attribute(lang_object_symbols_statement_enum);
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}
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|
| ';'
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| CONSTRUCTORS
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{
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|
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|
lang_add_attribute(lang_constructors_statement_enum);
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}
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|
| SORT '(' CONSTRUCTORS ')'
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{
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constructors_sorted = true;
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lang_add_attribute (lang_constructors_statement_enum);
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|
}
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|
| input_section_spec
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|
| length '(' mustbe_exp ')'
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|
{
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lang_add_data ((int) $1, $3);
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}
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|
|
|
| FILL '(' fill_exp ')'
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|
{
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lang_add_fill ($3);
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}
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|
;
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|
|
|
statement_list:
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|
statement_list statement
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|
| statement
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|
;
|
|
|
|
statement_list_opt:
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|
/* empty */
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|
| statement_list
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|
;
|
|
|
|
length:
|
|
QUAD
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{ $$ = $1; }
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|
| SQUAD
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{ $$ = $1; }
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|
| LONG
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{ $$ = $1; }
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|
| SHORT
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|
{ $$ = $1; }
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|
| BYTE
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|
{ $$ = $1; }
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|
;
|
|
|
|
fill_exp:
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|
mustbe_exp
|
|
{
|
|
$$ = exp_get_fill ($1,
|
|
0,
|
|
"fill value",
|
|
lang_first_phase_enum);
|
|
}
|
|
;
|
|
|
|
fill_opt:
|
|
'=' fill_exp
|
|
{ $$ = $2; }
|
|
| { $$ = (fill_type *) 0; }
|
|
;
|
|
|
|
assign_op:
|
|
PLUSEQ
|
|
{ $$ = '+'; }
|
|
| MINUSEQ
|
|
{ $$ = '-'; }
|
|
| MULTEQ
|
|
{ $$ = '*'; }
|
|
| DIVEQ
|
|
{ $$ = '/'; }
|
|
| LSHIFTEQ
|
|
{ $$ = LSHIFT; }
|
|
| RSHIFTEQ
|
|
{ $$ = RSHIFT; }
|
|
| ANDEQ
|
|
{ $$ = '&'; }
|
|
| OREQ
|
|
{ $$ = '|'; }
|
|
|
|
;
|
|
|
|
end: ';' | ','
|
|
;
|
|
|
|
|
|
assignment:
|
|
NAME '=' mustbe_exp
|
|
{
|
|
lang_add_assignment (exp_assop ($2, $1, $3));
|
|
}
|
|
| NAME assign_op mustbe_exp
|
|
{
|
|
lang_add_assignment (exp_assop ('=', $1,
|
|
exp_binop ($2,
|
|
exp_nameop (NAME,
|
|
$1),
|
|
$3)));
|
|
}
|
|
| PROVIDE '(' NAME '=' mustbe_exp ')'
|
|
{
|
|
lang_add_assignment (exp_provide ($3, $5));
|
|
}
|
|
;
|
|
|
|
|
|
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 '=' mustbe_exp
|
|
{ region->current =
|
|
region->origin =
|
|
exp_get_vma($3, 0L,"origin", lang_first_phase_enum);
|
|
}
|
|
;
|
|
|
|
length_spec:
|
|
LENGTH '=' mustbe_exp
|
|
{ region->length = exp_get_vma($3,
|
|
~((bfd_vma)0),
|
|
"length",
|
|
lang_first_phase_enum);
|
|
}
|
|
;
|
|
|
|
attributes_opt:
|
|
/* empty */
|
|
{ /* dummy action to avoid bison 1.25 error message */ }
|
|
| '(' attributes_list ')'
|
|
;
|
|
|
|
attributes_list:
|
|
attributes_string
|
|
| attributes_list attributes_string
|
|
;
|
|
|
|
attributes_string:
|
|
NAME
|
|
{ lang_set_flags (region, $1, 0); }
|
|
| '!' NAME
|
|
{ lang_set_flags (region, $2, 1); }
|
|
;
|
|
|
|
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); }
|
|
;
|
|
|
|
nocrossref_list:
|
|
/* empty */
|
|
{
|
|
$$ = NULL;
|
|
}
|
|
| NAME nocrossref_list
|
|
{
|
|
struct lang_nocrossref *n;
|
|
|
|
n = (struct lang_nocrossref *) xmalloc (sizeof *n);
|
|
n->name = $1;
|
|
n->next = $2;
|
|
$$ = n;
|
|
}
|
|
| NAME ',' nocrossref_list
|
|
{
|
|
struct lang_nocrossref *n;
|
|
|
|
n = (struct lang_nocrossref *) xmalloc (sizeof *n);
|
|
n->name = $1;
|
|
n->next = $3;
|
|
$$ = n;
|
|
}
|
|
;
|
|
|
|
mustbe_exp: { ldlex_expression(); }
|
|
exp
|
|
{ ldlex_popstate(); $$=$2;}
|
|
;
|
|
|
|
exp :
|
|
'-' exp %prec UNARY
|
|
{ $$ = exp_unop('-', $2); }
|
|
| '(' exp ')'
|
|
{ $$ = $2; }
|
|
| NEXT '(' exp ')' %prec UNARY
|
|
{ $$ = exp_unop((int) $1,$3); }
|
|
| '!' exp %prec UNARY
|
|
{ $$ = 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
|
|
{ $$ = exp_bigintop ($1.integer, $1.str); }
|
|
| SIZEOF_HEADERS
|
|
{ $$ = exp_nameop(SIZEOF_HEADERS,0); }
|
|
|
|
| SIZEOF '(' NAME ')'
|
|
{ $$ = exp_nameop(SIZEOF,$3); }
|
|
| ADDR '(' NAME ')'
|
|
{ $$ = exp_nameop(ADDR,$3); }
|
|
| LOADADDR '(' NAME ')'
|
|
{ $$ = exp_nameop(LOADADDR,$3); }
|
|
| ABSOLUTE '(' exp ')'
|
|
{ $$ = exp_unop(ABSOLUTE, $3); }
|
|
| ALIGN_K '(' exp ')'
|
|
{ $$ = exp_unop(ALIGN_K,$3); }
|
|
| DATA_SEGMENT_ALIGN '(' exp ',' exp ')'
|
|
{ $$ = exp_binop (DATA_SEGMENT_ALIGN, $3, $5); }
|
|
| DATA_SEGMENT_END '(' exp ')'
|
|
{ $$ = exp_unop(DATA_SEGMENT_END, $3); }
|
|
| BLOCK '(' exp ')'
|
|
{ $$ = exp_unop(ALIGN_K,$3); }
|
|
| NAME
|
|
{ $$ = exp_nameop(NAME,$1); }
|
|
| MAX_K '(' exp ',' exp ')'
|
|
{ $$ = exp_binop (MAX_K, $3, $5 ); }
|
|
| MIN_K '(' exp ',' exp ')'
|
|
{ $$ = exp_binop (MIN_K, $3, $5 ); }
|
|
| ASSERT_K '(' exp ',' NAME ')'
|
|
{ $$ = exp_assert ($3, $5); }
|
|
;
|
|
|
|
|
|
memspec_at_opt:
|
|
AT '>' NAME { $$ = $3; }
|
|
| { $$ = 0; }
|
|
;
|
|
|
|
opt_at:
|
|
AT '(' exp ')' { $$ = $3; }
|
|
| { $$ = 0; }
|
|
;
|
|
|
|
section: NAME { ldlex_expression(); }
|
|
opt_exp_with_type
|
|
opt_at { ldlex_popstate (); ldlex_script (); }
|
|
'{'
|
|
{
|
|
lang_enter_output_section_statement($1, $3,
|
|
sectype,
|
|
0, 0, 0, $4);
|
|
}
|
|
statement_list_opt
|
|
'}' { ldlex_popstate (); ldlex_expression (); }
|
|
memspec_opt memspec_at_opt phdr_opt fill_opt
|
|
{
|
|
ldlex_popstate ();
|
|
lang_leave_output_section_statement ($14, $11, $13, $12);
|
|
}
|
|
opt_comma
|
|
{}
|
|
| OVERLAY
|
|
{ ldlex_expression (); }
|
|
opt_exp_without_type opt_nocrossrefs opt_at
|
|
{ ldlex_popstate (); ldlex_script (); }
|
|
'{'
|
|
{
|
|
lang_enter_overlay ($3);
|
|
}
|
|
overlay_section
|
|
'}'
|
|
{ ldlex_popstate (); ldlex_expression (); }
|
|
memspec_opt memspec_at_opt phdr_opt fill_opt
|
|
{
|
|
ldlex_popstate ();
|
|
lang_leave_overlay ($5, (int) $4,
|
|
$15, $12, $14, $13);
|
|
}
|
|
opt_comma
|
|
| /* The GROUP case is just enough to support the gcc
|
|
svr3.ifile script. It is not intended to be full
|
|
support. I'm not even sure what GROUP is supposed
|
|
to mean. */
|
|
GROUP { ldlex_expression (); }
|
|
opt_exp_with_type
|
|
{
|
|
ldlex_popstate ();
|
|
lang_add_assignment (exp_assop ('=', ".", $3));
|
|
}
|
|
'{' sec_or_group_p1 '}'
|
|
;
|
|
|
|
type:
|
|
NOLOAD { sectype = noload_section; }
|
|
| DSECT { sectype = dsect_section; }
|
|
| COPY { sectype = copy_section; }
|
|
| INFO { sectype = info_section; }
|
|
| OVERLAY { sectype = overlay_section; }
|
|
;
|
|
|
|
atype:
|
|
'(' type ')'
|
|
| /* EMPTY */ { sectype = normal_section; }
|
|
| '(' ')' { sectype = normal_section; }
|
|
;
|
|
|
|
opt_exp_with_type:
|
|
exp atype ':' { $$ = $1; }
|
|
| atype ':' { $$ = (etree_type *)NULL; }
|
|
| /* The BIND cases are to support the gcc svr3.ifile
|
|
script. They aren't intended to implement full
|
|
support for the BIND keyword. I'm not even sure
|
|
what BIND is supposed to mean. */
|
|
BIND '(' exp ')' atype ':' { $$ = $3; }
|
|
| BIND '(' exp ')' BLOCK '(' exp ')' atype ':'
|
|
{ $$ = $3; }
|
|
;
|
|
|
|
opt_exp_without_type:
|
|
exp ':' { $$ = $1; }
|
|
| ':' { $$ = (etree_type *) NULL; }
|
|
;
|
|
|
|
opt_nocrossrefs:
|
|
/* empty */
|
|
{ $$ = 0; }
|
|
| NOCROSSREFS
|
|
{ $$ = 1; }
|
|
;
|
|
|
|
memspec_opt:
|
|
'>' NAME
|
|
{ $$ = $2; }
|
|
| { $$ = "*default*"; }
|
|
;
|
|
|
|
phdr_opt:
|
|
/* empty */
|
|
{
|
|
$$ = NULL;
|
|
}
|
|
| phdr_opt ':' NAME
|
|
{
|
|
struct lang_output_section_phdr_list *n;
|
|
|
|
n = ((struct lang_output_section_phdr_list *)
|
|
xmalloc (sizeof *n));
|
|
n->name = $3;
|
|
n->used = false;
|
|
n->next = $1;
|
|
$$ = n;
|
|
}
|
|
;
|
|
|
|
overlay_section:
|
|
/* empty */
|
|
| overlay_section
|
|
NAME
|
|
{
|
|
ldlex_script ();
|
|
lang_enter_overlay_section ($2);
|
|
}
|
|
'{' statement_list_opt '}'
|
|
{ ldlex_popstate (); ldlex_expression (); }
|
|
phdr_opt fill_opt
|
|
{
|
|
ldlex_popstate ();
|
|
lang_leave_overlay_section ($9, $8);
|
|
}
|
|
opt_comma
|
|
;
|
|
|
|
phdrs:
|
|
PHDRS '{' phdr_list '}'
|
|
;
|
|
|
|
phdr_list:
|
|
/* empty */
|
|
| phdr_list phdr
|
|
;
|
|
|
|
phdr:
|
|
NAME { ldlex_expression (); }
|
|
phdr_type phdr_qualifiers { ldlex_popstate (); }
|
|
';'
|
|
{
|
|
lang_new_phdr ($1, $3, $4.filehdr, $4.phdrs, $4.at,
|
|
$4.flags);
|
|
}
|
|
;
|
|
|
|
phdr_type:
|
|
exp
|
|
{
|
|
$$ = $1;
|
|
|
|
if ($1->type.node_class == etree_name
|
|
&& $1->type.node_code == NAME)
|
|
{
|
|
const char *s;
|
|
unsigned int i;
|
|
static const char * const phdr_types[] =
|
|
{
|
|
"PT_NULL", "PT_LOAD", "PT_DYNAMIC",
|
|
"PT_INTERP", "PT_NOTE", "PT_SHLIB",
|
|
"PT_PHDR"
|
|
};
|
|
|
|
s = $1->name.name;
|
|
for (i = 0;
|
|
i < sizeof phdr_types / sizeof phdr_types[0];
|
|
i++)
|
|
if (strcmp (s, phdr_types[i]) == 0)
|
|
{
|
|
$$ = exp_intop (i);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
;
|
|
|
|
phdr_qualifiers:
|
|
/* empty */
|
|
{
|
|
memset (&$$, 0, sizeof (struct phdr_info));
|
|
}
|
|
| NAME phdr_val phdr_qualifiers
|
|
{
|
|
$$ = $3;
|
|
if (strcmp ($1, "FILEHDR") == 0 && $2 == NULL)
|
|
$$.filehdr = true;
|
|
else if (strcmp ($1, "PHDRS") == 0 && $2 == NULL)
|
|
$$.phdrs = true;
|
|
else if (strcmp ($1, "FLAGS") == 0 && $2 != NULL)
|
|
$$.flags = $2;
|
|
else
|
|
einfo (_("%X%P:%S: PHDRS syntax error at `%s'\n"), $1);
|
|
}
|
|
| AT '(' exp ')' phdr_qualifiers
|
|
{
|
|
$$ = $5;
|
|
$$.at = $3;
|
|
}
|
|
;
|
|
|
|
phdr_val:
|
|
/* empty */
|
|
{
|
|
$$ = NULL;
|
|
}
|
|
| '(' exp ')'
|
|
{
|
|
$$ = $2;
|
|
}
|
|
;
|
|
|
|
/* This syntax is used within an external version script file. */
|
|
|
|
version_script_file:
|
|
{
|
|
ldlex_version_file ();
|
|
PUSH_ERROR (_("VERSION script"));
|
|
}
|
|
vers_nodes
|
|
{
|
|
ldlex_popstate ();
|
|
POP_ERROR ();
|
|
}
|
|
;
|
|
|
|
/* This is used within a normal linker script file. */
|
|
|
|
version:
|
|
{
|
|
ldlex_version_script ();
|
|
}
|
|
VERSIONK '{' vers_nodes '}'
|
|
{
|
|
ldlex_popstate ();
|
|
}
|
|
;
|
|
|
|
vers_nodes:
|
|
vers_node
|
|
| vers_nodes vers_node
|
|
;
|
|
|
|
vers_node:
|
|
'{' vers_tag '}' ';'
|
|
{
|
|
lang_register_vers_node (NULL, $2, NULL);
|
|
}
|
|
| VERS_TAG '{' vers_tag '}' ';'
|
|
{
|
|
lang_register_vers_node ($1, $3, NULL);
|
|
}
|
|
| VERS_TAG '{' vers_tag '}' verdep ';'
|
|
{
|
|
lang_register_vers_node ($1, $3, $5);
|
|
}
|
|
;
|
|
|
|
verdep:
|
|
VERS_TAG
|
|
{
|
|
$$ = lang_add_vers_depend (NULL, $1);
|
|
}
|
|
| verdep VERS_TAG
|
|
{
|
|
$$ = lang_add_vers_depend ($1, $2);
|
|
}
|
|
;
|
|
|
|
vers_tag:
|
|
/* empty */
|
|
{
|
|
$$ = lang_new_vers_node (NULL, NULL);
|
|
}
|
|
| vers_defns ';'
|
|
{
|
|
$$ = lang_new_vers_node ($1, NULL);
|
|
}
|
|
| GLOBAL ':' vers_defns ';'
|
|
{
|
|
$$ = lang_new_vers_node ($3, NULL);
|
|
}
|
|
| LOCAL ':' vers_defns ';'
|
|
{
|
|
$$ = lang_new_vers_node (NULL, $3);
|
|
}
|
|
| GLOBAL ':' vers_defns ';' LOCAL ':' vers_defns ';'
|
|
{
|
|
$$ = lang_new_vers_node ($3, $7);
|
|
}
|
|
;
|
|
|
|
vers_defns:
|
|
VERS_IDENTIFIER
|
|
{
|
|
$$ = lang_new_vers_pattern (NULL, $1, ldgram_vers_current_lang);
|
|
}
|
|
| vers_defns ';' VERS_IDENTIFIER
|
|
{
|
|
$$ = lang_new_vers_pattern ($1, $3, ldgram_vers_current_lang);
|
|
}
|
|
| EXTERN NAME '{'
|
|
{
|
|
$<name>$ = ldgram_vers_current_lang;
|
|
ldgram_vers_current_lang = $2;
|
|
}
|
|
vers_defns '}'
|
|
{
|
|
$$ = $5;
|
|
ldgram_vers_current_lang = $<name>4;
|
|
}
|
|
;
|
|
|
|
%%
|
|
void
|
|
yyerror(arg)
|
|
const char *arg;
|
|
{
|
|
if (ldfile_assumed_script)
|
|
einfo (_("%P:%s: file format not recognized; treating as linker script\n"),
|
|
ldfile_input_filename);
|
|
if (error_index > 0 && error_index < ERROR_NAME_MAX)
|
|
einfo ("%P%F:%S: %s in %s\n", arg, error_names[error_index-1]);
|
|
else
|
|
einfo ("%P%F:%S: %s\n", arg);
|
|
}
|