1483 lines
32 KiB
Plaintext
1483 lines
32 KiB
Plaintext
/* A YACC grammar to parse a superset of the AT&T linker scripting language.
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Copyright (C) 1991-2015 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 the 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, 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 "sysdep.h"
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#include "bfd.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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static lang_memory_region_type *region;
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bfd_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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struct flag_info_list *flag_info_list;
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struct flag_info *flag_info;
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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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bfd_boolean filehdr;
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bfd_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 opt_subalign opt_align
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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 <flag_info_list> sect_flag_list
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%type <flag_info> sect_flags
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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 INSERT_K AFTER BEFORE
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%token DATA_SEGMENT_ALIGN DATA_SEGMENT_RELRO_END DATA_SEGMENT_END
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%token SORT_BY_NAME SORT_BY_ALIGNMENT SORT_NONE
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%token SORT_BY_INIT_PRIORITY
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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 SEGMENT_START
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%token INCLUDE
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%token MEMORY
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%token REGION_ALIAS
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%token LD_FEATURE
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%token NOLOAD DSECT COPY INFO OVERLAY
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%token DEFINED TARGET_K SEARCH_DIR MAP ENTRY
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%token <integer> NEXT
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%token SIZEOF ALIGNOF 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 SUBALIGN HIDDEN PROVIDE PROVIDE_HIDDEN AS_NEEDED
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%type <token> assign_op atype attributes_opt sect_constraint opt_align_with_input
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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 LOG2CEIL 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 ONLY_IF_RO ONLY_IF_RW SPECIAL INPUT_SECTION_FLAGS ALIGN_WITH_INPUT
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%token EXCLUDE_FILE
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%token CONSTANT
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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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%token INPUT_DYNAMIC_LIST
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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_DYNAMIC_LIST dynamic_list_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_defsym ($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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/* Parsed as expressions so that commas separate entries */
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extern_name_list:
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{ ldlex_expression (); }
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extern_name_list_body
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{ ldlex_popstate (); }
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extern_name_list_body:
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NAME
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{ ldlang_add_undef ($1, FALSE); }
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| extern_name_list_body NAME
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{ ldlang_add_undef ($2, FALSE); }
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| extern_name_list_body ',' NAME
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{ ldlang_add_undef ($3, FALSE); }
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;
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script_file:
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{ ldlex_both(); }
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ifile_list
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{ ldlex_popstate(); }
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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, bfd_arch_unknown); }
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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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| INSERT_K AFTER NAME
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{ lang_add_insert ($3, 0); }
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| INSERT_K BEFORE NAME
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{ lang_add_insert ($3, 1); }
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| REGION_ALIAS '(' NAME ',' NAME ')'
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{ lang_memory_region_alias ($3, $5); }
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| LD_FEATURE '(' NAME ')'
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{ lang_ld_feature ($3); }
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;
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input_list:
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{ ldlex_inputlist(); }
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input_list1
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{ ldlex_popstate(); }
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input_list1:
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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_list1 ',' 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_list1 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_list1 ',' 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_list1 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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| AS_NEEDED '('
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{ $<integer>$ = input_flags.add_DT_NEEDED_for_regular;
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input_flags.add_DT_NEEDED_for_regular = TRUE; }
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input_list1 ')'
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{ input_flags.add_DT_NEEDED_for_regular = $<integer>3; }
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| input_list1 ',' AS_NEEDED '('
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{ $<integer>$ = input_flags.add_DT_NEEDED_for_regular;
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input_flags.add_DT_NEEDED_for_regular = TRUE; }
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input_list1 ')'
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{ input_flags.add_DT_NEEDED_for_regular = $<integer>5; }
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| input_list1 AS_NEEDED '('
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{ $<integer>$ = input_flags.add_DT_NEEDED_for_regular;
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input_flags.add_DT_NEEDED_for_regular = TRUE; }
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input_list1 ')'
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{ input_flags.add_DT_NEEDED_for_regular = $<integer>4; }
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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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| ASSERT_K {ldlex_expression ();} '(' exp ',' NAME ')'
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{ ldlex_popstate ();
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lang_add_assignment (exp_assert ($4, $6)); }
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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 = none;
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|
$$.exclude_name_list = NULL;
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|
$$.section_flag_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 = none;
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|
$$.exclude_name_list = $3;
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|
$$.section_flag_list = NULL;
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|
}
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| SORT_BY_NAME '(' wildcard_name ')'
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|
{
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|
$$.name = $3;
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|
$$.sorted = by_name;
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|
$$.exclude_name_list = NULL;
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|
$$.section_flag_list = NULL;
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|
}
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|
| SORT_BY_ALIGNMENT '(' wildcard_name ')'
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|
{
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|
$$.name = $3;
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|
$$.sorted = by_alignment;
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|
$$.exclude_name_list = NULL;
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|
$$.section_flag_list = NULL;
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|
}
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|
| SORT_NONE '(' wildcard_name ')'
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|
{
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|
$$.name = $3;
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|
$$.sorted = by_none;
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$$.exclude_name_list = NULL;
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$$.section_flag_list = NULL;
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|
}
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| SORT_BY_NAME '(' SORT_BY_ALIGNMENT '(' wildcard_name ')' ')'
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|
{
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|
$$.name = $5;
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|
$$.sorted = by_name_alignment;
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|
$$.exclude_name_list = NULL;
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|
$$.section_flag_list = NULL;
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|
}
|
|
| SORT_BY_NAME '(' SORT_BY_NAME '(' wildcard_name ')' ')'
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|
{
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|
$$.name = $5;
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|
$$.sorted = by_name;
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|
$$.exclude_name_list = NULL;
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|
$$.section_flag_list = NULL;
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|
}
|
|
| SORT_BY_ALIGNMENT '(' SORT_BY_NAME '(' wildcard_name ')' ')'
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|
{
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|
$$.name = $5;
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|
$$.sorted = by_alignment_name;
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|
$$.exclude_name_list = NULL;
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|
$$.section_flag_list = NULL;
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|
}
|
|
| SORT_BY_ALIGNMENT '(' SORT_BY_ALIGNMENT '(' wildcard_name ')' ')'
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|
{
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|
$$.name = $5;
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|
$$.sorted = by_alignment;
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|
$$.exclude_name_list = NULL;
|
|
$$.section_flag_list = NULL;
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|
}
|
|
| SORT_BY_NAME '(' EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name ')'
|
|
{
|
|
$$.name = $7;
|
|
$$.sorted = by_name;
|
|
$$.exclude_name_list = $5;
|
|
$$.section_flag_list = NULL;
|
|
}
|
|
| SORT_BY_INIT_PRIORITY '(' wildcard_name ')'
|
|
{
|
|
$$.name = $3;
|
|
$$.sorted = by_init_priority;
|
|
$$.exclude_name_list = NULL;
|
|
$$.section_flag_list = NULL;
|
|
}
|
|
;
|
|
|
|
sect_flag_list: NAME
|
|
{
|
|
struct flag_info_list *n;
|
|
n = ((struct flag_info_list *) xmalloc (sizeof *n));
|
|
if ($1[0] == '!')
|
|
{
|
|
n->with = without_flags;
|
|
n->name = &$1[1];
|
|
}
|
|
else
|
|
{
|
|
n->with = with_flags;
|
|
n->name = $1;
|
|
}
|
|
n->valid = FALSE;
|
|
n->next = NULL;
|
|
$$ = n;
|
|
}
|
|
| sect_flag_list '&' NAME
|
|
{
|
|
struct flag_info_list *n;
|
|
n = ((struct flag_info_list *) xmalloc (sizeof *n));
|
|
if ($3[0] == '!')
|
|
{
|
|
n->with = without_flags;
|
|
n->name = &$3[1];
|
|
}
|
|
else
|
|
{
|
|
n->with = with_flags;
|
|
n->name = $3;
|
|
}
|
|
n->valid = FALSE;
|
|
n->next = $1;
|
|
$$ = n;
|
|
}
|
|
;
|
|
|
|
sect_flags:
|
|
INPUT_SECTION_FLAGS '(' sect_flag_list ')'
|
|
{
|
|
struct flag_info *n;
|
|
n = ((struct flag_info *) xmalloc (sizeof *n));
|
|
n->flag_list = $3;
|
|
n->flags_initialized = FALSE;
|
|
n->not_with_flags = 0;
|
|
n->only_with_flags = 0;
|
|
$$ = n;
|
|
}
|
|
;
|
|
|
|
exclude_name_list:
|
|
exclude_name_list wildcard_name
|
|
{
|
|
struct name_list *tmp;
|
|
tmp = (struct name_list *) xmalloc (sizeof *tmp);
|
|
tmp->name = $2;
|
|
tmp->next = $1;
|
|
$$ = tmp;
|
|
}
|
|
|
|
|
wildcard_name
|
|
{
|
|
struct name_list *tmp;
|
|
tmp = (struct name_list *) xmalloc (sizeof *tmp);
|
|
tmp->name = $1;
|
|
tmp->next = NULL;
|
|
$$ = tmp;
|
|
}
|
|
;
|
|
|
|
file_NAME_list:
|
|
file_NAME_list opt_comma wildcard_spec
|
|
{
|
|
struct wildcard_list *tmp;
|
|
tmp = (struct wildcard_list *) xmalloc (sizeof *tmp);
|
|
tmp->next = $1;
|
|
tmp->spec = $3;
|
|
$$ = tmp;
|
|
}
|
|
|
|
|
wildcard_spec
|
|
{
|
|
struct wildcard_list *tmp;
|
|
tmp = (struct wildcard_list *) xmalloc (sizeof *tmp);
|
|
tmp->next = NULL;
|
|
tmp->spec = $1;
|
|
$$ = tmp;
|
|
}
|
|
;
|
|
|
|
input_section_spec_no_keep:
|
|
NAME
|
|
{
|
|
struct wildcard_spec tmp;
|
|
tmp.name = $1;
|
|
tmp.exclude_name_list = NULL;
|
|
tmp.sorted = none;
|
|
tmp.section_flag_list = NULL;
|
|
lang_add_wild (&tmp, NULL, ldgram_had_keep);
|
|
}
|
|
| sect_flags NAME
|
|
{
|
|
struct wildcard_spec tmp;
|
|
tmp.name = $2;
|
|
tmp.exclude_name_list = NULL;
|
|
tmp.sorted = none;
|
|
tmp.section_flag_list = $1;
|
|
lang_add_wild (&tmp, NULL, ldgram_had_keep);
|
|
}
|
|
| '[' file_NAME_list ']'
|
|
{
|
|
lang_add_wild (NULL, $2, ldgram_had_keep);
|
|
}
|
|
| sect_flags '[' file_NAME_list ']'
|
|
{
|
|
struct wildcard_spec tmp;
|
|
tmp.name = NULL;
|
|
tmp.exclude_name_list = NULL;
|
|
tmp.sorted = none;
|
|
tmp.section_flag_list = $1;
|
|
lang_add_wild (&tmp, $3, ldgram_had_keep);
|
|
}
|
|
| wildcard_spec '(' file_NAME_list ')'
|
|
{
|
|
lang_add_wild (&$1, $3, ldgram_had_keep);
|
|
}
|
|
| sect_flags wildcard_spec '(' file_NAME_list ')'
|
|
{
|
|
$2.section_flag_list = $1;
|
|
lang_add_wild (&$2, $4, ldgram_had_keep);
|
|
}
|
|
;
|
|
|
|
input_section_spec:
|
|
input_section_spec_no_keep
|
|
| KEEP '('
|
|
{ ldgram_had_keep = TRUE; }
|
|
input_section_spec_no_keep ')'
|
|
{ ldgram_had_keep = FALSE; }
|
|
;
|
|
|
|
statement:
|
|
assignment end
|
|
| CREATE_OBJECT_SYMBOLS
|
|
{
|
|
lang_add_attribute(lang_object_symbols_statement_enum);
|
|
}
|
|
| ';'
|
|
| CONSTRUCTORS
|
|
{
|
|
|
|
lang_add_attribute(lang_constructors_statement_enum);
|
|
}
|
|
| SORT_BY_NAME '(' CONSTRUCTORS ')'
|
|
{
|
|
constructors_sorted = TRUE;
|
|
lang_add_attribute (lang_constructors_statement_enum);
|
|
}
|
|
| input_section_spec
|
|
| length '(' mustbe_exp ')'
|
|
{
|
|
lang_add_data ((int) $1, $3);
|
|
}
|
|
|
|
| FILL '(' fill_exp ')'
|
|
{
|
|
lang_add_fill ($3);
|
|
}
|
|
| ASSERT_K {ldlex_expression ();} '(' exp ',' NAME ')' end
|
|
{ ldlex_popstate ();
|
|
lang_add_assignment (exp_assert ($4, $6)); }
|
|
| INCLUDE filename
|
|
{ ldlex_script (); ldfile_open_command_file($2); }
|
|
statement_list_opt END
|
|
{ ldlex_popstate (); }
|
|
;
|
|
|
|
statement_list:
|
|
statement_list statement
|
|
| statement
|
|
;
|
|
|
|
statement_list_opt:
|
|
/* empty */
|
|
| statement_list
|
|
;
|
|
|
|
length:
|
|
QUAD
|
|
{ $$ = $1; }
|
|
| SQUAD
|
|
{ $$ = $1; }
|
|
| LONG
|
|
{ $$ = $1; }
|
|
| SHORT
|
|
{ $$ = $1; }
|
|
| BYTE
|
|
{ $$ = $1; }
|
|
;
|
|
|
|
fill_exp:
|
|
mustbe_exp
|
|
{
|
|
$$ = exp_get_fill ($1, 0, "fill value");
|
|
}
|
|
;
|
|
|
|
fill_opt:
|
|
'=' fill_exp
|
|
{ $$ = $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_assign ($1, $3, FALSE));
|
|
}
|
|
| NAME assign_op mustbe_exp
|
|
{
|
|
lang_add_assignment (exp_assign ($1,
|
|
exp_binop ($2,
|
|
exp_nameop (NAME,
|
|
$1),
|
|
$3), FALSE));
|
|
}
|
|
| HIDDEN '(' NAME '=' mustbe_exp ')'
|
|
{
|
|
lang_add_assignment (exp_assign ($3, $5, TRUE));
|
|
}
|
|
| PROVIDE '(' NAME '=' mustbe_exp ')'
|
|
{
|
|
lang_add_assignment (exp_provide ($3, $5, FALSE));
|
|
}
|
|
| PROVIDE_HIDDEN '(' NAME '=' mustbe_exp ')'
|
|
{
|
|
lang_add_assignment (exp_provide ($3, $5, TRUE));
|
|
}
|
|
;
|
|
|
|
|
|
opt_comma:
|
|
',' | ;
|
|
|
|
|
|
memory:
|
|
MEMORY '{' memory_spec_list_opt '}'
|
|
;
|
|
|
|
memory_spec_list_opt: memory_spec_list | ;
|
|
|
|
memory_spec_list:
|
|
memory_spec_list opt_comma memory_spec
|
|
| memory_spec
|
|
;
|
|
|
|
|
|
memory_spec: NAME
|
|
{ region = lang_memory_region_lookup ($1, TRUE); }
|
|
attributes_opt ':'
|
|
origin_spec opt_comma length_spec
|
|
{}
|
|
| INCLUDE filename
|
|
{ ldlex_script (); ldfile_open_command_file($2); }
|
|
memory_spec_list_opt END
|
|
{ ldlex_popstate (); }
|
|
;
|
|
|
|
origin_spec:
|
|
ORIGIN '=' mustbe_exp
|
|
{
|
|
region->origin_exp = $3;
|
|
region->current = region->origin;
|
|
}
|
|
;
|
|
|
|
length_spec:
|
|
LENGTH '=' mustbe_exp
|
|
{
|
|
region->length_exp = $3;
|
|
}
|
|
;
|
|
|
|
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
|
|
{ $$ = exp_nameop (SIZEOF_HEADERS,0); }
|
|
|
|
| ALIGNOF '(' NAME ')'
|
|
{ $$ = exp_nameop (ALIGNOF,$3); }
|
|
| SIZEOF '(' NAME ')'
|
|
{ $$ = exp_nameop (SIZEOF,$3); }
|
|
| ADDR '(' NAME ')'
|
|
{ $$ = exp_nameop (ADDR,$3); }
|
|
| LOADADDR '(' NAME ')'
|
|
{ $$ = exp_nameop (LOADADDR,$3); }
|
|
| CONSTANT '(' NAME ')'
|
|
{ $$ = exp_nameop (CONSTANT,$3); }
|
|
| ABSOLUTE '(' exp ')'
|
|
{ $$ = exp_unop (ABSOLUTE, $3); }
|
|
| ALIGN_K '(' exp ')'
|
|
{ $$ = exp_unop (ALIGN_K,$3); }
|
|
| ALIGN_K '(' exp ',' exp ')'
|
|
{ $$ = exp_binop (ALIGN_K,$3,$5); }
|
|
| DATA_SEGMENT_ALIGN '(' exp ',' exp ')'
|
|
{ $$ = exp_binop (DATA_SEGMENT_ALIGN, $3, $5); }
|
|
| DATA_SEGMENT_RELRO_END '(' exp ',' exp ')'
|
|
{ $$ = exp_binop (DATA_SEGMENT_RELRO_END, $5, $3); }
|
|
| DATA_SEGMENT_END '(' exp ')'
|
|
{ $$ = exp_unop (DATA_SEGMENT_END, $3); }
|
|
| SEGMENT_START '(' NAME ',' exp ')'
|
|
{ /* The operands to the expression node are
|
|
placed in the opposite order from the way
|
|
in which they appear in the script as
|
|
that allows us to reuse more code in
|
|
fold_binary. */
|
|
$$ = exp_binop (SEGMENT_START,
|
|
$5,
|
|
exp_nameop (NAME, $3)); }
|
|
| BLOCK '(' exp ')'
|
|
{ $$ = 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); }
|
|
| ORIGIN '(' NAME ')'
|
|
{ $$ = exp_nameop (ORIGIN, $3); }
|
|
| LENGTH '(' NAME ')'
|
|
{ $$ = exp_nameop (LENGTH, $3); }
|
|
| LOG2CEIL '(' exp ')'
|
|
{ $$ = exp_unop (LOG2CEIL, $3); }
|
|
;
|
|
|
|
|
|
memspec_at_opt:
|
|
AT '>' NAME { $$ = $3; }
|
|
| { $$ = 0; }
|
|
;
|
|
|
|
opt_at:
|
|
AT '(' exp ')' { $$ = $3; }
|
|
| { $$ = 0; }
|
|
;
|
|
|
|
opt_align:
|
|
ALIGN_K '(' exp ')' { $$ = $3; }
|
|
| { $$ = 0; }
|
|
;
|
|
|
|
opt_align_with_input:
|
|
ALIGN_WITH_INPUT { $$ = ALIGN_WITH_INPUT; }
|
|
| { $$ = 0; }
|
|
;
|
|
|
|
opt_subalign:
|
|
SUBALIGN '(' exp ')' { $$ = $3; }
|
|
| { $$ = 0; }
|
|
;
|
|
|
|
sect_constraint:
|
|
ONLY_IF_RO { $$ = ONLY_IF_RO; }
|
|
| ONLY_IF_RW { $$ = ONLY_IF_RW; }
|
|
| SPECIAL { $$ = SPECIAL; }
|
|
| { $$ = 0; }
|
|
;
|
|
|
|
section: NAME { ldlex_expression(); }
|
|
opt_exp_with_type
|
|
opt_at
|
|
opt_align
|
|
opt_align_with_input
|
|
opt_subalign { ldlex_popstate (); ldlex_script (); }
|
|
sect_constraint
|
|
'{'
|
|
{
|
|
lang_enter_output_section_statement($1, $3,
|
|
sectype,
|
|
$5, $7, $4, $9, $6);
|
|
}
|
|
statement_list_opt
|
|
'}' { ldlex_popstate (); ldlex_expression (); }
|
|
memspec_opt memspec_at_opt phdr_opt fill_opt
|
|
{
|
|
ldlex_popstate ();
|
|
lang_leave_output_section_statement ($18, $15, $17, $16);
|
|
}
|
|
opt_comma
|
|
{}
|
|
| OVERLAY
|
|
{ ldlex_expression (); }
|
|
opt_exp_without_type opt_nocrossrefs opt_at opt_subalign
|
|
{ ldlex_popstate (); ldlex_script (); }
|
|
'{'
|
|
{
|
|
lang_enter_overlay ($3, $6);
|
|
}
|
|
overlay_section
|
|
'}'
|
|
{ ldlex_popstate (); ldlex_expression (); }
|
|
memspec_opt memspec_at_opt phdr_opt fill_opt
|
|
{
|
|
ldlex_popstate ();
|
|
lang_leave_overlay ($5, (int) $4,
|
|
$16, $13, $15, $14);
|
|
}
|
|
opt_comma
|
|
| /* The GROUP case is just enough to support the gcc
|
|
svr3.ifile script. It is not intended to be full
|
|
support. I'm not even sure what GROUP is supposed
|
|
to mean. */
|
|
GROUP { ldlex_expression (); }
|
|
opt_exp_with_type
|
|
{
|
|
ldlex_popstate ();
|
|
lang_add_assignment (exp_assign (".", $3, FALSE));
|
|
}
|
|
'{' sec_or_group_p1 '}'
|
|
| INCLUDE filename
|
|
{ ldlex_script (); ldfile_open_command_file($2); }
|
|
sec_or_group_p1 END
|
|
{ ldlex_popstate (); }
|
|
;
|
|
|
|
type:
|
|
NOLOAD { sectype = noload_section; }
|
|
| DSECT { sectype = noalloc_section; }
|
|
| COPY { sectype = noalloc_section; }
|
|
| INFO { sectype = noalloc_section; }
|
|
| OVERLAY { sectype = noalloc_section; }
|
|
;
|
|
|
|
atype:
|
|
'(' type ')'
|
|
| /* EMPTY */ { sectype = normal_section; }
|
|
| '(' ')' { sectype = normal_section; }
|
|
;
|
|
|
|
opt_exp_with_type:
|
|
exp atype ':' { $$ = $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; }
|
|
| { $$ = DEFAULT_MEMORY_REGION; }
|
|
;
|
|
|
|
phdr_opt:
|
|
/* empty */
|
|
{
|
|
$$ = 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", "PT_TLS"
|
|
};
|
|
|
|
s = $1->name.name;
|
|
for (i = 0;
|
|
i < sizeof phdr_types / sizeof phdr_types[0];
|
|
i++)
|
|
if (strcmp (s, phdr_types[i]) == 0)
|
|
{
|
|
$$ = exp_intop (i);
|
|
break;
|
|
}
|
|
if (i == sizeof phdr_types / sizeof phdr_types[0])
|
|
{
|
|
if (strcmp (s, "PT_GNU_EH_FRAME") == 0)
|
|
$$ = exp_intop (0x6474e550);
|
|
else if (strcmp (s, "PT_GNU_STACK") == 0)
|
|
$$ = exp_intop (0x6474e551);
|
|
else
|
|
{
|
|
einfo (_("\
|
|
%X%P:%S: unknown phdr type `%s' (try integer literal)\n"),
|
|
NULL, s);
|
|
$$ = exp_intop (0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
;
|
|
|
|
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)
|
|
$$.flags = $2;
|
|
else
|
|
einfo (_("%X%P:%S: PHDRS syntax error at `%s'\n"),
|
|
NULL, $1);
|
|
}
|
|
| AT '(' exp ')' phdr_qualifiers
|
|
{
|
|
$$ = $5;
|
|
$$.at = $3;
|
|
}
|
|
;
|
|
|
|
phdr_val:
|
|
/* empty */
|
|
{
|
|
$$ = NULL;
|
|
}
|
|
| '(' exp ')'
|
|
{
|
|
$$ = $2;
|
|
}
|
|
;
|
|
|
|
dynamic_list_file:
|
|
{
|
|
ldlex_version_file ();
|
|
PUSH_ERROR (_("dynamic list"));
|
|
}
|
|
dynamic_list_nodes
|
|
{
|
|
ldlex_popstate ();
|
|
POP_ERROR ();
|
|
}
|
|
;
|
|
|
|
dynamic_list_nodes:
|
|
dynamic_list_node
|
|
| dynamic_list_nodes dynamic_list_node
|
|
;
|
|
|
|
dynamic_list_node:
|
|
'{' dynamic_list_tag '}' ';'
|
|
;
|
|
|
|
dynamic_list_tag:
|
|
vers_defns ';'
|
|
{
|
|
lang_append_dynamic_list ($1);
|
|
}
|
|
;
|
|
|
|
/* This syntax is used within an external version script file. */
|
|
|
|
version_script_file:
|
|
{
|
|
ldlex_version_file ();
|
|
PUSH_ERROR (_("VERSION script"));
|
|
}
|
|
vers_nodes
|
|
{
|
|
ldlex_popstate ();
|
|
POP_ERROR ();
|
|
}
|
|
;
|
|
|
|
/* This is used within a normal linker script file. */
|
|
|
|
version:
|
|
{
|
|
ldlex_version_script ();
|
|
}
|
|
VERSIONK '{' vers_nodes '}'
|
|
{
|
|
ldlex_popstate ();
|
|
}
|
|
;
|
|
|
|
vers_nodes:
|
|
vers_node
|
|
| vers_nodes vers_node
|
|
;
|
|
|
|
vers_node:
|
|
'{' vers_tag '}' ';'
|
|
{
|
|
lang_register_vers_node (NULL, $2, NULL);
|
|
}
|
|
| VERS_TAG '{' vers_tag '}' ';'
|
|
{
|
|
lang_register_vers_node ($1, $3, NULL);
|
|
}
|
|
| VERS_TAG '{' vers_tag '}' verdep ';'
|
|
{
|
|
lang_register_vers_node ($1, $3, $5);
|
|
}
|
|
;
|
|
|
|
verdep:
|
|
VERS_TAG
|
|
{
|
|
$$ = 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
|
|
{
|
|
$$ = lang_new_vers_pattern (NULL, $1, ldgram_vers_current_lang, FALSE);
|
|
}
|
|
| NAME
|
|
{
|
|
$$ = lang_new_vers_pattern (NULL, $1, ldgram_vers_current_lang, TRUE);
|
|
}
|
|
| vers_defns ';' VERS_IDENTIFIER
|
|
{
|
|
$$ = lang_new_vers_pattern ($1, $3, ldgram_vers_current_lang, FALSE);
|
|
}
|
|
| vers_defns ';' NAME
|
|
{
|
|
$$ = lang_new_vers_pattern ($1, $3, ldgram_vers_current_lang, TRUE);
|
|
}
|
|
| vers_defns ';' EXTERN NAME '{'
|
|
{
|
|
$<name>$ = ldgram_vers_current_lang;
|
|
ldgram_vers_current_lang = $4;
|
|
}
|
|
vers_defns opt_semicolon '}'
|
|
{
|
|
struct bfd_elf_version_expr *pat;
|
|
for (pat = $7; pat->next != NULL; pat = pat->next);
|
|
pat->next = $1;
|
|
$$ = $7;
|
|
ldgram_vers_current_lang = $<name>6;
|
|
}
|
|
| EXTERN NAME '{'
|
|
{
|
|
$<name>$ = ldgram_vers_current_lang;
|
|
ldgram_vers_current_lang = $2;
|
|
}
|
|
vers_defns opt_semicolon '}'
|
|
{
|
|
$$ = $5;
|
|
ldgram_vers_current_lang = $<name>4;
|
|
}
|
|
| GLOBAL
|
|
{
|
|
$$ = lang_new_vers_pattern (NULL, "global", ldgram_vers_current_lang, FALSE);
|
|
}
|
|
| vers_defns ';' GLOBAL
|
|
{
|
|
$$ = lang_new_vers_pattern ($1, "global", ldgram_vers_current_lang, FALSE);
|
|
}
|
|
| LOCAL
|
|
{
|
|
$$ = lang_new_vers_pattern (NULL, "local", ldgram_vers_current_lang, FALSE);
|
|
}
|
|
| vers_defns ';' LOCAL
|
|
{
|
|
$$ = lang_new_vers_pattern ($1, "local", ldgram_vers_current_lang, FALSE);
|
|
}
|
|
| EXTERN
|
|
{
|
|
$$ = lang_new_vers_pattern (NULL, "extern", ldgram_vers_current_lang, FALSE);
|
|
}
|
|
| vers_defns ';' EXTERN
|
|
{
|
|
$$ = lang_new_vers_pattern ($1, "extern", ldgram_vers_current_lang, FALSE);
|
|
}
|
|
;
|
|
|
|
opt_semicolon:
|
|
/* empty */
|
|
| ';'
|
|
;
|
|
|
|
%%
|
|
void
|
|
yyerror(arg)
|
|
const char *arg;
|
|
{
|
|
if (ldfile_assumed_script)
|
|
einfo (_("%P:%s: file format not recognized; treating as linker script\n"),
|
|
ldlex_filename ());
|
|
if (error_index > 0 && error_index < ERROR_NAME_MAX)
|
|
einfo ("%P%F:%S: %s in %s\n", NULL, arg, error_names[error_index - 1]);
|
|
else
|
|
einfo ("%P%F:%S: %s\n", NULL, arg);
|
|
}
|