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- /* A YACC grammar to parse a superset of the AT&T linker scripting language.
- Copyright (C) 1991-2022 Free Software Foundation, Inc.
- Written by Steve Chamberlain of Cygnus Support (steve@cygnus.com).
- This file is part of the GNU Binutils.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
- MA 02110-1301, USA. */
- %{
- /*
- */
- #define DONTDECLARE_MALLOC
- #include "sysdep.h"
- #include "bfd.h"
- #include "bfdlink.h"
- #include "ctf-api.h"
- #include "ld.h"
- #include "ldexp.h"
- #include "ldver.h"
- #include "ldlang.h"
- #include "ldfile.h"
- #include "ldemul.h"
- #include "ldmisc.h"
- #include "ldmain.h"
- #include "mri.h"
- #include "ldctor.h"
- #include "ldlex.h"
- #ifndef YYDEBUG
- #define YYDEBUG 1
- #endif
- static enum section_type sectype;
- static etree_type *sectype_value;
- static lang_memory_region_type *region;
- static bool ldgram_had_keep = false;
- static char *ldgram_vers_current_lang = NULL;
- #define ERROR_NAME_MAX 20
- static char *error_names[ERROR_NAME_MAX];
- static int error_index;
- #define PUSH_ERROR(x) if (error_index < ERROR_NAME_MAX) error_names[error_index] = x; error_index++;
- #define POP_ERROR() error_index--;
- %}
- %union {
- bfd_vma integer;
- struct big_int
- {
- bfd_vma integer;
- char *str;
- } bigint;
- fill_type *fill;
- char *name;
- const char *cname;
- struct wildcard_spec wildcard;
- struct wildcard_list *wildcard_list;
- struct name_list *name_list;
- struct flag_info_list *flag_info_list;
- struct flag_info *flag_info;
- int token;
- union etree_union *etree;
- struct phdr_info
- {
- bool filehdr;
- bool phdrs;
- union etree_union *at;
- union etree_union *flags;
- } phdr;
- struct lang_nocrossref *nocrossref;
- struct lang_output_section_phdr_list *section_phdr;
- struct bfd_elf_version_deps *deflist;
- struct bfd_elf_version_expr *versyms;
- struct bfd_elf_version_tree *versnode;
- }
- %type <etree> exp opt_exp_with_type mustbe_exp opt_at phdr_type phdr_val
- %type <etree> opt_exp_without_type opt_subalign opt_align
- %type <fill> fill_opt fill_exp
- %type <name_list> exclude_name_list
- %type <wildcard_list> section_name_list
- %type <flag_info_list> sect_flag_list
- %type <flag_info> sect_flags
- %type <name> memspec_opt memspec_at_opt paren_script_name casesymlist
- %type <cname> wildcard_name
- %type <wildcard> section_name_spec filename_spec wildcard_maybe_exclude
- %token <bigint> INT
- %token <name> NAME LNAME
- %type <integer> length
- %type <phdr> phdr_qualifiers
- %type <nocrossref> nocrossref_list
- %type <section_phdr> phdr_opt
- %type <integer> opt_nocrossrefs
- %right <token> PLUSEQ MINUSEQ MULTEQ DIVEQ '=' LSHIFTEQ RSHIFTEQ ANDEQ OREQ
- %right <token> '?' ':'
- %left <token> OROR
- %left <token> ANDAND
- %left <token> '|'
- %left <token> '^'
- %left <token> '&'
- %left <token> EQ NE
- %left <token> '<' '>' LE GE
- %left <token> LSHIFT RSHIFT
- %left <token> '+' '-'
- %left <token> '*' '/' '%'
- %right UNARY
- %token END
- %left <token> '('
- %token <token> ALIGN_K BLOCK BIND QUAD SQUAD LONG SHORT BYTE
- %token SECTIONS PHDRS INSERT_K AFTER BEFORE
- %token DATA_SEGMENT_ALIGN DATA_SEGMENT_RELRO_END DATA_SEGMENT_END
- %token SORT_BY_NAME SORT_BY_ALIGNMENT SORT_NONE
- %token SORT_BY_INIT_PRIORITY
- %token '{' '}'
- %token SIZEOF_HEADERS OUTPUT_FORMAT FORCE_COMMON_ALLOCATION OUTPUT_ARCH
- %token INHIBIT_COMMON_ALLOCATION FORCE_GROUP_ALLOCATION
- %token SEGMENT_START
- %token INCLUDE
- %token MEMORY
- %token REGION_ALIAS
- %token LD_FEATURE
- %token NOLOAD DSECT COPY INFO OVERLAY
- %token READONLY
- %token TYPE
- %token DEFINED TARGET_K SEARCH_DIR MAP ENTRY
- %token <integer> NEXT
- %token SIZEOF ALIGNOF ADDR LOADADDR MAX_K MIN_K
- %token STARTUP HLL SYSLIB FLOAT NOFLOAT NOCROSSREFS NOCROSSREFS_TO
- %token ORIGIN FILL
- %token LENGTH CREATE_OBJECT_SYMBOLS INPUT GROUP OUTPUT CONSTRUCTORS
- %token ALIGNMOD AT SUBALIGN HIDDEN PROVIDE PROVIDE_HIDDEN AS_NEEDED
- %type <token> assign_op atype attributes_opt sect_constraint opt_align_with_input
- %type <name> filename
- %token CHIP LIST SECT ABSOLUTE LOAD NEWLINE ENDWORD ORDER NAMEWORD ASSERT_K
- %token LOG2CEIL FORMAT PUBLIC DEFSYMEND BASE ALIAS TRUNCATE REL
- %token INPUT_SCRIPT INPUT_MRI_SCRIPT INPUT_DEFSYM CASE EXTERN START
- %token <name> VERS_TAG VERS_IDENTIFIER
- %token GLOBAL LOCAL VERSIONK INPUT_VERSION_SCRIPT
- %token KEEP ONLY_IF_RO ONLY_IF_RW SPECIAL INPUT_SECTION_FLAGS ALIGN_WITH_INPUT
- %token EXCLUDE_FILE
- %token CONSTANT
- %type <versyms> vers_defns
- %type <versnode> vers_tag
- %type <deflist> verdep
- %token INPUT_DYNAMIC_LIST
- %%
- file:
- INPUT_SCRIPT script_file
- | INPUT_MRI_SCRIPT mri_script_file
- | INPUT_VERSION_SCRIPT version_script_file
- | INPUT_DYNAMIC_LIST dynamic_list_file
- | INPUT_DEFSYM defsym_expr
- ;
- filename: NAME;
- defsym_expr:
- { ldlex_expression(); }
- assignment
- { ldlex_popstate(); }
- ;
- /* SYNTAX WITHIN AN MRI SCRIPT FILE */
- mri_script_file:
- {
- ldlex_mri_script ();
- PUSH_ERROR (_("MRI style script"));
- }
- mri_script_lines
- {
- ldlex_popstate ();
- mri_draw_tree ();
- POP_ERROR ();
- }
- ;
- mri_script_lines:
- mri_script_lines mri_script_command NEWLINE
- |
- ;
- mri_script_command:
- CHIP exp
- | CHIP exp ',' exp
- | NAME {
- einfo(_("%F%P: unrecognised keyword in MRI style script '%s'\n"),$1);
- }
- | LIST {
- config.map_filename = "-";
- }
- | ORDER ordernamelist
- | ENDWORD
- | PUBLIC NAME '=' exp
- { mri_public($2, $4); }
- | PUBLIC NAME ',' exp
- { mri_public($2, $4); }
- | PUBLIC NAME exp
- { mri_public($2, $3); }
- | FORMAT NAME
- { mri_format($2); }
- | SECT NAME ',' exp
- { mri_output_section($2, $4);}
- | SECT NAME exp
- { mri_output_section($2, $3);}
- | SECT NAME '=' exp
- { mri_output_section($2, $4);}
- | ALIGN_K NAME '=' exp
- { mri_align($2,$4); }
- | ALIGN_K NAME ',' exp
- { mri_align($2,$4); }
- | ALIGNMOD NAME '=' exp
- { mri_alignmod($2,$4); }
- | ALIGNMOD NAME ',' exp
- { mri_alignmod($2,$4); }
- | ABSOLUTE mri_abs_name_list
- | LOAD mri_load_name_list
- | NAMEWORD NAME
- { mri_name($2); }
- | ALIAS NAME ',' NAME
- { mri_alias($2,$4,0);}
- | ALIAS NAME ',' INT
- { mri_alias ($2, 0, (int) $4.integer); }
- | BASE exp
- { mri_base($2); }
- | TRUNCATE INT
- { mri_truncate ((unsigned int) $2.integer); }
- | CASE casesymlist
- | EXTERN extern_name_list
- | INCLUDE filename
- { ldfile_open_command_file ($2); }
- mri_script_lines END
- | START NAME
- { lang_add_entry ($2, false); }
- |
- ;
- ordernamelist:
- ordernamelist ',' NAME { mri_order($3); }
- | ordernamelist NAME { mri_order($2); }
- |
- ;
- mri_load_name_list:
- NAME
- { mri_load($1); }
- | mri_load_name_list ',' NAME { mri_load($3); }
- ;
- mri_abs_name_list:
- NAME
- { mri_only_load($1); }
- | mri_abs_name_list ',' NAME
- { mri_only_load($3); }
- ;
- casesymlist:
- /* empty */ { $$ = NULL; }
- | NAME
- | casesymlist ',' NAME
- ;
- extern_name_list:
- NAME
- { ldlang_add_undef ($1, false); }
- | extern_name_list NAME
- { ldlang_add_undef ($2, false); }
- | extern_name_list ',' NAME
- { ldlang_add_undef ($3, false); }
- ;
- script_file:
- { ldlex_script (); }
- ifile_list
- { ldlex_popstate (); }
- ;
- ifile_list:
- ifile_list ifile_p1
- |
- ;
- ifile_p1:
- memory
- | sections
- | phdrs
- | startup
- | high_level_library
- | low_level_library
- | floating_point_support
- | statement_anywhere
- | version
- | ';'
- | TARGET_K '(' NAME ')'
- { lang_add_target($3); }
- | SEARCH_DIR '(' filename ')'
- { ldfile_add_library_path ($3, false); }
- | OUTPUT '(' filename ')'
- { lang_add_output($3, 1); }
- | OUTPUT_FORMAT '(' NAME ')'
- { lang_add_output_format ($3, (char *) NULL,
- (char *) NULL, 1); }
- | OUTPUT_FORMAT '(' NAME ',' NAME ',' NAME ')'
- { lang_add_output_format ($3, $5, $7, 1); }
- | OUTPUT_ARCH '(' NAME ')'
- { ldfile_set_output_arch ($3, bfd_arch_unknown); }
- | FORCE_COMMON_ALLOCATION
- { command_line.force_common_definition = true ; }
- | FORCE_GROUP_ALLOCATION
- { command_line.force_group_allocation = true ; }
- | INHIBIT_COMMON_ALLOCATION
- { link_info.inhibit_common_definition = true ; }
- | INPUT '(' input_list ')'
- | GROUP
- { lang_enter_group (); }
- '(' input_list ')'
- { lang_leave_group (); }
- | MAP '(' filename ')'
- { lang_add_map($3); }
- | INCLUDE filename
- { ldfile_open_command_file ($2); }
- ifile_list END
- | NOCROSSREFS '(' nocrossref_list ')'
- {
- lang_add_nocrossref ($3);
- }
- | NOCROSSREFS_TO '(' nocrossref_list ')'
- {
- lang_add_nocrossref_to ($3);
- }
- | EXTERN '(' { ldlex_expression (); } extern_name_list ')'
- { ldlex_popstate (); }
- | INSERT_K AFTER NAME
- { lang_add_insert ($3, 0); }
- | INSERT_K BEFORE NAME
- { lang_add_insert ($3, 1); }
- | REGION_ALIAS '(' NAME ',' NAME ')'
- { lang_memory_region_alias ($3, $5); }
- | LD_FEATURE '(' NAME ')'
- { lang_ld_feature ($3); }
- ;
- input_list:
- { ldlex_inputlist(); }
- input_list1
- { ldlex_popstate(); }
- input_list1:
- NAME
- { lang_add_input_file($1,lang_input_file_is_search_file_enum,
- (char *)NULL); }
- | input_list1 ',' NAME
- { lang_add_input_file($3,lang_input_file_is_search_file_enum,
- (char *)NULL); }
- | input_list1 NAME
- { lang_add_input_file($2,lang_input_file_is_search_file_enum,
- (char *)NULL); }
- | LNAME
- { lang_add_input_file($1,lang_input_file_is_l_enum,
- (char *)NULL); }
- | input_list1 ',' LNAME
- { lang_add_input_file($3,lang_input_file_is_l_enum,
- (char *)NULL); }
- | input_list1 LNAME
- { lang_add_input_file($2,lang_input_file_is_l_enum,
- (char *)NULL); }
- | AS_NEEDED '('
- { $<integer>$ = input_flags.add_DT_NEEDED_for_regular;
- input_flags.add_DT_NEEDED_for_regular = true; }
- input_list1 ')'
- { input_flags.add_DT_NEEDED_for_regular = $<integer>3; }
- | input_list1 ',' AS_NEEDED '('
- { $<integer>$ = input_flags.add_DT_NEEDED_for_regular;
- input_flags.add_DT_NEEDED_for_regular = true; }
- input_list1 ')'
- { input_flags.add_DT_NEEDED_for_regular = $<integer>5; }
- | input_list1 AS_NEEDED '('
- { $<integer>$ = input_flags.add_DT_NEEDED_for_regular;
- input_flags.add_DT_NEEDED_for_regular = true; }
- input_list1 ')'
- { input_flags.add_DT_NEEDED_for_regular = $<integer>4; }
- ;
- sections:
- SECTIONS '{' sec_or_group_p1 '}'
- ;
- sec_or_group_p1:
- sec_or_group_p1 section
- | sec_or_group_p1 statement_anywhere
- |
- ;
- statement_anywhere:
- ENTRY '(' NAME ')'
- { lang_add_entry ($3, false); }
- | assignment separator
- | ASSERT_K {ldlex_expression ();} '(' exp ',' NAME ')'
- { ldlex_popstate ();
- lang_add_assignment (exp_assert ($4, $6)); }
- ;
- wildcard_name:
- NAME
- {
- $$ = $1;
- }
- ;
- wildcard_maybe_exclude:
- wildcard_name
- {
- $$.name = $1;
- $$.sorted = none;
- $$.exclude_name_list = NULL;
- $$.section_flag_list = NULL;
- }
- | EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name
- {
- $$.name = $5;
- $$.sorted = none;
- $$.exclude_name_list = $3;
- $$.section_flag_list = NULL;
- }
- ;
- filename_spec:
- wildcard_maybe_exclude
- | SORT_BY_NAME '(' wildcard_maybe_exclude ')'
- {
- $$ = $3;
- $$.sorted = by_name;
- }
- | SORT_NONE '(' wildcard_maybe_exclude ')'
- {
- $$ = $3;
- $$.sorted = by_none;
- }
- ;
- section_name_spec:
- wildcard_maybe_exclude
- | SORT_BY_NAME '(' wildcard_maybe_exclude ')'
- {
- $$ = $3;
- $$.sorted = by_name;
- }
- | SORT_BY_ALIGNMENT '(' wildcard_maybe_exclude ')'
- {
- $$ = $3;
- $$.sorted = by_alignment;
- }
- | SORT_NONE '(' wildcard_maybe_exclude ')'
- {
- $$ = $3;
- $$.sorted = by_none;
- }
- | SORT_BY_NAME '(' SORT_BY_ALIGNMENT '(' wildcard_maybe_exclude ')' ')'
- {
- $$ = $5;
- $$.sorted = by_name_alignment;
- }
- | SORT_BY_NAME '(' SORT_BY_NAME '(' wildcard_maybe_exclude ')' ')'
- {
- $$ = $5;
- $$.sorted = by_name;
- }
- | SORT_BY_ALIGNMENT '(' SORT_BY_NAME '(' wildcard_maybe_exclude ')' ')'
- {
- $$ = $5;
- $$.sorted = by_alignment_name;
- }
- | SORT_BY_ALIGNMENT '(' SORT_BY_ALIGNMENT '(' wildcard_maybe_exclude ')' ')'
- {
- $$ = $5;
- $$.sorted = by_alignment;
- }
- | SORT_BY_INIT_PRIORITY '(' wildcard_maybe_exclude ')'
- {
- $$ = $3;
- $$.sorted = by_init_priority;
- }
- ;
- 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;
- $$ = tmp;
- }
- ;
- section_name_list:
- section_name_list opt_comma section_name_spec
- {
- struct wildcard_list *tmp;
- tmp = (struct wildcard_list *) xmalloc (sizeof *tmp);
- tmp->next = $1;
- tmp->spec = $3;
- $$ = tmp;
- }
- |
- section_name_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);
- }
- | '[' section_name_list ']'
- {
- lang_add_wild (NULL, $2, ldgram_had_keep);
- }
- | sect_flags '[' section_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);
- }
- | filename_spec '(' section_name_list ')'
- {
- lang_add_wild (&$1, $3, ldgram_had_keep);
- }
- | sect_flags filename_spec '(' section_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 separator
- | 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 ')' separator
- {
- ldlex_popstate ();
- lang_add_assignment (exp_assert ($4, $6));
- }
- | INCLUDE filename
- {
- ldfile_open_command_file ($2);
- }
- statement_list_opt END
- ;
- 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
- { $$ = '|'; }
- ;
- separator: ';' | ','
- ;
- 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
- { ldfile_open_command_file ($2); }
- memory_spec_list_opt END
- ;
- origin_spec:
- ORIGIN '=' mustbe_exp
- {
- region->origin_exp = $3;
- }
- ;
- length_spec:
- LENGTH '=' mustbe_exp
- {
- if (yychar == NAME)
- {
- yyclearin;
- ldlex_backup ();
- }
- 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;
- }
- ;
- paren_script_name: { ldlex_script (); }
- '(' NAME ')'
- { ldlex_popstate (); $$ = $3; }
- mustbe_exp: { ldlex_expression (); }
- exp
- { ldlex_popstate (); $$ = $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 paren_script_name
- { $$ = exp_nameop (ALIGNOF, $2); }
- | SIZEOF paren_script_name
- { $$ = exp_nameop (SIZEOF, $2); }
- | ADDR paren_script_name
- { $$ = exp_nameop (ADDR, $2); }
- | LOADADDR paren_script_name
- { $$ = exp_nameop (LOADADDR, $2); }
- | 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 ')'
- { $$ = exp_unop (DATA_SEGMENT_END, $3); }
- | SEGMENT_START { ldlex_script (); } '(' NAME
- { ldlex_popstate (); } ',' exp ')'
- { /* The operands to the expression node are
- placed in the opposite order from the way
- in which they appear in the script as
- that allows us to reuse more code in
- fold_binary. */
- $$ = exp_binop (SEGMENT_START,
- $7,
- exp_nameop (NAME, $4)); }
- | 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 ')'
- { $$ = exp_assert ($3, $5); }
- | ORIGIN paren_script_name
- { $$ = exp_nameop (ORIGIN, $2); }
- | LENGTH paren_script_name
- { $$ = exp_nameop (LENGTH, $2); }
- | LOG2CEIL '(' exp ')'
- { $$ = 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
- sect_constraint
- {
- ldlex_popstate ();
- ldlex_wild ();
- lang_enter_output_section_statement ($1, $3, sectype,
- sectype_value, $5, $7, $4, $8, $6);
- }
- '{'
- statement_list_opt
- '}'
- { ldlex_popstate (); }
- memspec_opt memspec_at_opt phdr_opt fill_opt
- {
- /* fill_opt may have switched the lexer into
- expression state, and back again, but in
- order to find the end of the fill
- expression the parser must look ahead one
- token. If it is a NAME, throw it away as
- it will have been lexed in the wrong
- state. */
- if (yychar == NAME)
- {
- yyclearin;
- ldlex_backup ();
- }
- lang_leave_output_section_statement ($17, $14,
- $16, $15);
- }
- opt_comma
- | OVERLAY
- { ldlex_expression (); }
- opt_exp_without_type opt_nocrossrefs opt_at opt_subalign
- { ldlex_popstate (); }
- '{'
- {
- lang_enter_overlay ($3, $6);
- }
- overlay_section
- '}'
- memspec_opt memspec_at_opt phdr_opt fill_opt
- {
- if (yychar == NAME)
- {
- yyclearin;
- ldlex_backup ();
- }
- 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_assign (".", $3, false));
- }
- '{' sec_or_group_p1 '}'
- | INCLUDE filename
- {
- ldfile_open_command_file ($2);
- }
- sec_or_group_p1 END
- ;
- type:
- NOLOAD { sectype = noload_section; }
- | DSECT { sectype = noalloc_section; }
- | COPY { sectype = noalloc_section; }
- | INFO { sectype = noalloc_section; }
- | OVERLAY { sectype = noalloc_section; }
- | READONLY '(' TYPE '=' exp ')' { sectype = typed_readonly_section; sectype_value = $5; }
- | READONLY { sectype = readonly_section; }
- | TYPE '=' exp { sectype = type_section; sectype_value = $3; }
- ;
- 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_wild ();
- lang_enter_overlay_section ($2);
- }
- '{'
- statement_list_opt
- '}'
- { ldlex_popstate (); }
- phdr_opt fill_opt
- {
- if (yychar == NAME)
- {
- yyclearin;
- ldlex_backup ();
- }
- 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 if (strcmp (s, "PT_GNU_RELRO") == 0)
- $$ = exp_intop (0x6474e552);
- else if (strcmp (s, "PT_GNU_PROPERTY") == 0)
- $$ = exp_intop (0x6474e553);
- else
- {
- einfo (_("\
- %X%P:%pS: 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:%pS: 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 (current_dynamic_list_p, $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 ("%F%P:%pS: %s in %s\n", NULL, arg, error_names[error_index - 1]);
- else
- einfo ("%F%P:%pS: %s\n", NULL, arg);
- }
|