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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, 1998
+ 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
+%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
+ { $$ = '|'; }
+
+ ;
+
+end: ';' | ','
+ ;
+
+
+assignment:
+ NAME '=' mustbe_exp
+ {
+ lang_add_assignment (exp_assop ($2, $1, $3));
+ }
+ | NAME assign_op mustbe_exp
+ {
+ lang_add_assignment (exp_assop ('=', $1,
+ exp_binop ($2,
+ exp_nameop (NAME,
+ $1),
+ $3)));
+ }
+ | PROVIDE '(' NAME '=' mustbe_exp ')'
+ {
+ lang_add_assignment (exp_provide ($3, $5));
+ }
+ ;
+
+
+opt_comma:
+ ',' | ;
+
+
+memory:
+ MEMORY '{' memory_spec memory_spec_list '}'
+ ;
+
+memory_spec_list:
+ memory_spec_list memory_spec
+ | memory_spec_list ',' memory_spec
+ |
+ ;
+
+
+memory_spec: NAME
+ { region = lang_memory_region_lookup($1); }
+ attributes_opt ':'
+ origin_spec opt_comma length_spec
+
+ ; origin_spec:
+ ORIGIN '=' mustbe_exp
+ { region->current =
+ region->origin =
+ exp_get_vma($3, 0L,"origin", lang_first_phase_enum);
+}
+ ;
+
+length_spec:
+ LENGTH '=' mustbe_exp
+ { region->length = exp_get_vma($3,
+ ~((bfd_vma)0),
+ "length",
+ lang_first_phase_enum);
+ }
+
+
+attributes_opt:
+ '(' NAME ')'
+ {
+ lang_set_flags(region, $2);
+ }
+ |
+
+ ;
+
+startup:
+ STARTUP '(' filename ')'
+ { lang_startup($3); }
+ ;
+
+high_level_library:
+ HLL '(' high_level_library_NAME_list ')'
+ | HLL '(' ')'
+ { ldemul_hll((char *)NULL); }
+ ;
+
+high_level_library_NAME_list:
+ high_level_library_NAME_list opt_comma filename
+ { ldemul_hll($3); }
+ | filename
+ { ldemul_hll($1); }
+
+ ;
+
+low_level_library:
+ SYSLIB '(' low_level_library_NAME_list ')'
+ ; low_level_library_NAME_list:
+ low_level_library_NAME_list opt_comma filename
+ { ldemul_syslib($3); }
+ |
+ ;
+
+floating_point_support:
+ FLOAT
+ { lang_float(true); }
+ | NOFLOAT
+ { lang_float(false); }
+ ;
+
+nocrossref_list:
+ /* empty */
+ {
+ $$ = 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);
+}