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-/* A YACC grammer to parse a superset of the AT&T linker scripting languaue.
- Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 1999
- Free Software Foundation, Inc.
- Written by Steve Chamberlain of Cygnus Support (steve@cygnus.com).
-
-This file is part of GNU ld.
-
-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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-%{
-/*
-
- */
-
-#define DONTDECLARE_MALLOC
-
-#include "bfd.h"
-#include "sysdep.h"
-#include "bfdlink.h"
-#include "ld.h"
-#include "ldexp.h"
-#include "ldver.h"
-#include "ldlang.h"
-#include "ldemul.h"
-#include "ldfile.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;
-
-lang_memory_region_type *region;
-
-struct wildcard_spec current_file;
-boolean ldgram_want_filename = true;
-boolean had_script = false;
-boolean force_make_executable = false;
-
-boolean ldgram_in_script = false;
-boolean ldgram_had_equals = false;
-boolean ldgram_had_keep = false;
-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;
- char *name;
- const char *cname;
- struct wildcard_spec wildcard;
- int token;
- union etree_union *etree;
- struct phdr_info
- {
- boolean filehdr;
- boolean 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
-%type <integer> fill_opt
-%type <name> memspec_opt casesymlist
-%type <cname> wildcard_name
-%type <wildcard> wildcard_spec
-%token <integer> 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 SORT
-%token '{' '}'
-%token SIZEOF_HEADERS OUTPUT_FORMAT FORCE_COMMON_ALLOCATION OUTPUT_ARCH
-%token SIZEOF_HEADERS
-%token INCLUDE
-%token MEMORY DEFSYMEND
-%token NOLOAD DSECT COPY INFO OVERLAY
-%token NAME LNAME DEFINED TARGET_K SEARCH_DIR MAP ENTRY
-%token <integer> NEXT
-%token SIZEOF ADDR LOADADDR MAX_K MIN_K
-%token STARTUP HLL SYSLIB FLOAT NOFLOAT NOCROSSREFS
-%token ORIGIN FILL
-%token LENGTH CREATE_OBJECT_SYMBOLS INPUT GROUP OUTPUT CONSTRUCTORS
-%token ALIGNMOD AT PROVIDE
-%type <token> assign_op atype attributes_opt
-%type <name> filename
-%token CHIP LIST SECT ABSOLUTE LOAD NEWLINE ENDWORD ORDER NAMEWORD ASSERT_K
-%token 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
-%token EXCLUDE_FILE
-%type <versyms> vers_defns
-%type <versnode> vers_tag
-%type <deflist> verdep
-
-%%
-
-file:
- INPUT_SCRIPT script_file
- | INPUT_MRI_SCRIPT mri_script_file
- | INPUT_VERSION_SCRIPT version_script_file
- | INPUT_DEFSYM defsym_expr
- ;
-
-
-filename: NAME;
-
-
-defsym_expr:
- { ldlex_defsym(); }
- NAME '=' exp
- {
- ldlex_popstate();
- lang_add_assignment(exp_assop($3,$2,$4));
- }
-
-/* 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(_("%P%F: 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);}
- | BASE exp
- { mri_base($2); }
- | TRUNCATE INT
- { mri_truncate((unsigned int) $2); }
- | 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); }
- | extern_name_list NAME
- { ldlang_add_undef ($2); }
- | extern_name_list ',' NAME
- { ldlang_add_undef ($3); }
- ;
-
-script_file:
- {
- ldlex_both();
- }
- 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); }
- | FORCE_COMMON_ALLOCATION
- { command_line.force_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);
- }
- | EXTERN '(' extern_name_list ')'
- ;
-
-input_list:
- NAME
- { lang_add_input_file($1,lang_input_file_is_search_file_enum,
- (char *)NULL); }
- | input_list ',' NAME
- { lang_add_input_file($3,lang_input_file_is_search_file_enum,
- (char *)NULL); }
- | input_list 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_list ',' LNAME
- { lang_add_input_file($3,lang_input_file_is_l_enum,
- (char *)NULL); }
- | input_list LNAME
- { lang_add_input_file($2,lang_input_file_is_l_enum,
- (char *)NULL); }
- ;
-
-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 end
- ;
-
-/* The '*' and '?' cases are there because the lexer returns them as
- separate tokens rather than as NAME. */
-wildcard_name:
- NAME
- {
- $$ = $1;
- }
- | '*'
- {
- $$ = "*";
- }
- | '?'
- {
- $$ = "?";
- }
- ;
-
-wildcard_spec:
- wildcard_name
- {
- $$.name = $1;
- $$.sorted = false;
- $$.exclude_name = NULL;
- }
- | EXCLUDE_FILE '(' wildcard_name ')' wildcard_name
- {
- $$.name = $5;
- $$.sorted = false;
- $$.exclude_name = $3;
- }
- | SORT '(' wildcard_name ')'
- {
- $$.name = $3;
- $$.sorted = true;
- $$.exclude_name = NULL;
- }
- | SORT '(' EXCLUDE_FILE '(' wildcard_name ')' wildcard_name ')'
- {
- $$.name = $7;
- $$.sorted = true;
- $$.exclude_name = $5;
- }
- ;
-
-
-file_NAME_list:
- wildcard_spec
- {
- lang_add_wild ($1.name, $1.sorted,
- current_file.name,
- current_file.sorted,
- ldgram_had_keep, $1.exclude_name);
- }
- | file_NAME_list opt_comma wildcard_spec
- {
- lang_add_wild ($3.name, $3.sorted,
- current_file.name,
- current_file.sorted,
- ldgram_had_keep, $3.exclude_name);
- }
- ;
-
-input_section_spec_no_keep:
- NAME
- {
- lang_add_wild (NULL, false, $1, false,
- ldgram_had_keep, NULL);
- }
- | '['
- {
- current_file.name = NULL;
- current_file.sorted = false;
- }
- file_NAME_list ']'
- | wildcard_spec
- {
- current_file = $1;
- /* '*' matches any file name. */
- if (strcmp (current_file.name, "*") == 0)
- current_file.name = NULL;
- }
- '(' file_NAME_list ')'
- ;
-
-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 '(' CONSTRUCTORS ')'
- {
- constructors_sorted = true;
- lang_add_attribute (lang_constructors_statement_enum);
- }
- | input_section_spec
- | length '(' mustbe_exp ')'
- {
- lang_add_data((int) $1,$3);
- }
-
- | FILL '(' mustbe_exp ')'
- {
- lang_add_fill
- (exp_get_value_int($3,
- 0,
- "fill value",
- lang_first_phase_enum));
- }
- ;
-
-statement_list:
- statement_list statement
- | statement
- ;
-
-statement_list_opt:
- /* empty */
- | statement_list
- ;
-
-length:
- QUAD
- { $$ = $1; }
- | SQUAD
- { $$ = $1; }
- | LONG
- { $$ = $1; }
- | SHORT
- { $$ = $1; }
- | BYTE
- { $$ = $1; }
- ;
-
-fill_opt:
- '=' mustbe_exp
- {
- $$ = exp_get_value_int($2,
- 0,
- "fill value",
- lang_first_phase_enum);
- }
- | { $$ = 0; }
- ;
-
-
-
-assign_op:
- PLUSEQ
- { $$ = '+'; }
- | MINUSEQ
- { $$ = '-'; }
- | MULTEQ
- { $$ = '*'; }
- | DIVEQ
- { $$ = '/'; }
- | LSHIFTEQ
- { $$ = LSHIFT; }
- | RSHIFTEQ
- { $$ = RSHIFT; }
- | ANDEQ
- { $$ = '&'; }
- | OREQ
- { $$ = '|'; }
-
- ;
-
-end: ';' | ','
- ;
-
-
-assignment:
- NAME '=' mustbe_exp
- {
- lang_add_assignment (exp_assop ($2, $1, $3));
- }
- | NAME assign_op mustbe_exp
- {
- lang_add_assignment (exp_assop ('=', $1,
- exp_binop ($2,
- exp_nameop (NAME,
- $1),
- $3)));
- }
- | PROVIDE '(' NAME '=' mustbe_exp ')'
- {
- lang_add_assignment (exp_provide ($3, $5));
- }
- ;
-
-
-opt_comma:
- ',' | ;
-
-
-memory:
- MEMORY '{' memory_spec memory_spec_list '}'
- ;
-
-memory_spec_list:
- memory_spec_list memory_spec
- | memory_spec_list ',' memory_spec
- |
- ;
-
-
-memory_spec: NAME
- { region = lang_memory_region_lookup($1); }
- attributes_opt ':'
- origin_spec opt_comma length_spec
-
- ; origin_spec:
- ORIGIN '=' mustbe_exp
- { region->current =
- region->origin =
- exp_get_vma($3, 0L,"origin", lang_first_phase_enum);
-}
- ;
-
-length_spec:
- LENGTH '=' mustbe_exp
- { region->length = exp_get_vma($3,
- ~((bfd_vma)0),
- "length",
- lang_first_phase_enum);
- }
- ;
-
-attributes_opt:
- /* empty */
- { /* dummy action to avoid bison 1.25 error message */ }
- | '(' attributes_list ')'
- ;
-
-attributes_list:
- attributes_string
- | attributes_list attributes_string
- ;
-
-attributes_string:
- NAME
- { lang_set_flags (region, $1, 0); }
- | '!' NAME
- { lang_set_flags (region, $2, 1); }
- ;
-
-startup:
- STARTUP '(' filename ')'
- { lang_startup($3); }
- ;
-
-high_level_library:
- HLL '(' high_level_library_NAME_list ')'
- | HLL '(' ')'
- { ldemul_hll((char *)NULL); }
- ;
-
-high_level_library_NAME_list:
- high_level_library_NAME_list opt_comma filename
- { ldemul_hll($3); }
- | filename
- { ldemul_hll($1); }
-
- ;
-
-low_level_library:
- SYSLIB '(' low_level_library_NAME_list ')'
- ; low_level_library_NAME_list:
- low_level_library_NAME_list opt_comma filename
- { ldemul_syslib($3); }
- |
- ;
-
-floating_point_support:
- FLOAT
- { lang_float(true); }
- | NOFLOAT
- { lang_float(false); }
- ;
-
-nocrossref_list:
- /* empty */
- {
- $$ = 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_intop($1); }
- | 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); }
- | 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 ')'
- { $$ = exp_assert ($3, $5); }
- ;
-
-
-opt_at:
- AT '(' exp ')' { $$ = $3; }
- | { $$ = 0; }
- ;
-
-section: NAME { ldlex_expression(); }
- opt_exp_with_type
- opt_at { ldlex_popstate (); ldlex_script (); }
- '{'
- {
- lang_enter_output_section_statement($1, $3,
- sectype,
- 0, 0, 0, $4);
- }
- statement_list_opt
- '}' { ldlex_popstate (); ldlex_expression (); }
- memspec_opt phdr_opt fill_opt
- {
- ldlex_popstate ();
- lang_leave_output_section_statement ($13, $11, $12);
- }
- opt_comma
- | OVERLAY
- { ldlex_expression (); }
- opt_exp_without_type opt_nocrossrefs opt_at
- { ldlex_popstate (); ldlex_script (); }
- '{'
- {
- lang_enter_overlay ($3, $5, (int) $4);
- }
- overlay_section
- '}'
- { ldlex_popstate (); ldlex_expression (); }
- memspec_opt phdr_opt fill_opt
- {
- ldlex_popstate ();
- lang_leave_overlay ($14, $12, $13);
- }
- opt_comma
- | /* The GROUP case is just enough to support the gcc
- svr3.ifile script. It is not intended to be full
- support. I'm not even sure what GROUP is supposed
- to mean. */
- GROUP { ldlex_expression (); }
- opt_exp_with_type
- {
- ldlex_popstate ();
- lang_add_assignment (exp_assop ('=', ".", $3));
- }
- '{' sec_or_group_p1 '}'
- ;
-
-type:
- NOLOAD { sectype = noload_section; }
- | DSECT { sectype = dsect_section; }
- | COPY { sectype = copy_section; }
- | INFO { sectype = info_section; }
- | OVERLAY { sectype = overlay_section; }
- ;
-
-atype:
- '(' type ')'
- | /* EMPTY */ { sectype = normal_section; }
- | '(' ')' { sectype = normal_section; }
- ;
-
-opt_exp_with_type:
- exp atype ':' { $$ = $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 '{' 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_regex (NULL, $1, ldgram_vers_current_lang);
- }
- | vers_defns ';' VERS_IDENTIFIER
- {
- $$ = lang_new_vers_regex ($1, $3, ldgram_vers_current_lang);
- }
- | EXTERN NAME '{'
- {
- $<name>$ = ldgram_vers_current_lang;
- ldgram_vers_current_lang = $2;
- }
- vers_defns '}'
- {
- 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);
-}
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