/* A YACC grammar to parse a superset of the AT&T linker scripting language.
Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001, 2002 Free Software Foundation, Inc.
+ 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
Written by Steve Chamberlain of Cygnus Support (steve@cygnus.com).
-This file is part of GNU ld.
+ 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 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.
+ 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. */
+ 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. */
%{
/*
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
-#include "ld.h"
+#include "ld.h"
#include "ldexp.h"
#include "ldver.h"
#include "ldlang.h"
}
%type <etree> exp opt_exp_with_type mustbe_exp opt_at phdr_type phdr_val
-%type <etree> opt_exp_without_type
+%type <etree> opt_exp_without_type opt_subalign
%type <fill> fill_opt fill_exp
%type <name_list> exclude_name_list
%type <wildcard_list> file_NAME_list
%type <name> memspec_at_opt
%type <cname> wildcard_name
%type <wildcard> wildcard_spec
-%token <bigint> INT
+%token <bigint> INT
%token <name> NAME LNAME
%type <integer> length
%type <phdr> phdr_qualifiers
%type <section_phdr> phdr_opt
%type <integer> opt_nocrossrefs
-%right <token> PLUSEQ MINUSEQ MULTEQ DIVEQ '=' LSHIFTEQ RSHIFTEQ ANDEQ OREQ
+%right <token> PLUSEQ MINUSEQ MULTEQ DIVEQ '=' LSHIFTEQ RSHIFTEQ ANDEQ OREQ
%right <token> '?' ':'
%left <token> OROR
%left <token> ANDAND
%left <token> '*' '/' '%'
%right UNARY
-%token END
+%token END
%left <token> '('
%token <token> ALIGN_K BLOCK BIND QUAD SQUAD LONG SHORT BYTE
-%token SECTIONS PHDRS SORT DATA_SEGMENT_ALIGN DATA_SEGMENT_END
+%token SECTIONS PHDRS DATA_SEGMENT_ALIGN DATA_SEGMENT_RELRO_END DATA_SEGMENT_END
+%token SORT_BY_NAME SORT_BY_ALIGNMENT
%token '{' '}'
%token SIZEOF_HEADERS OUTPUT_FORMAT FORCE_COMMON_ALLOCATION OUTPUT_ARCH
%token INHIBIT_COMMON_ALLOCATION
%token SIZEOF_HEADERS
+%token SEGMENT_START
%token INCLUDE
%token MEMORY DEFSYMEND
%token NOLOAD DSECT COPY INFO OVERLAY
%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
+%token ALIGNMOD AT SUBALIGN PROVIDE AS_NEEDED
+%type <token> assign_op atype attributes_opt sect_constraint
%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 KEEP ONLY_IF_RO ONLY_IF_RW
%token EXCLUDE_FILE
%type <versyms> vers_defns
%type <versnode> vers_tag
%%
-file:
+file:
INPUT_SCRIPT script_file
| INPUT_MRI_SCRIPT mri_script_file
| INPUT_VERSION_SCRIPT version_script_file
}
;
-/* SYNTAX WITHIN AN MRI SCRIPT FILE */
+/* SYNTAX WITHIN AN MRI SCRIPT FILE */
mri_script_file:
{
ldlex_mri_script ();
;
mri_script_command:
- CHIP exp
+ CHIP exp
| CHIP exp ',' exp
| NAME {
einfo(_("%P%F: unrecognised keyword in MRI style script '%s'\n"),$1);
config.map_filename = "-";
}
| ORDER ordernamelist
- | ENDWORD
+ | ENDWORD
| PUBLIC NAME '=' exp
{ mri_public($2, $4); }
| PUBLIC NAME ',' exp
{ mri_public($2, $4); }
- | PUBLIC NAME exp
+ | PUBLIC NAME exp
{ mri_public($2, $3); }
| FORMAT NAME
{ mri_format($2); }
{ mri_alignmod($2,$4); }
| ABSOLUTE mri_abs_name_list
| LOAD mri_load_name_list
- | NAMEWORD NAME
- { mri_name($2); }
+ | NAMEWORD NAME
+ { mri_name($2); }
| ALIAS NAME ',' NAME
{ mri_alias($2,$4,0);}
| ALIAS NAME ',' INT
| OUTPUT_FORMAT '(' NAME ',' NAME ',' NAME ')'
{ lang_add_output_format ($3, $5, $7, 1); }
| OUTPUT_ARCH '(' NAME ')'
- { ldfile_set_output_arch($3); }
+ { ldfile_set_output_arch ($3, bfd_arch_unknown); }
| FORCE_COMMON_ALLOCATION
{ command_line.force_common_definition = TRUE ; }
| INHIBIT_COMMON_ALLOCATION
{ lang_leave_group (); }
| MAP '(' filename ')'
{ lang_add_map($3); }
- | INCLUDE filename
+ | INCLUDE filename
{ ldlex_script (); ldfile_open_command_file($2); }
ifile_list END
{ ldlex_popstate (); }
| input_list LNAME
{ lang_add_input_file($2,lang_input_file_is_l_enum,
(char *)NULL); }
+ | AS_NEEDED '('
+ { $<integer>$ = as_needed; as_needed = TRUE; }
+ input_list ')'
+ { as_needed = $<integer>3; }
+ | input_list ',' AS_NEEDED '('
+ { $<integer>$ = as_needed; as_needed = TRUE; }
+ input_list ')'
+ { as_needed = $<integer>5; }
+ | input_list AS_NEEDED '('
+ { $<integer>$ = as_needed; as_needed = TRUE; }
+ input_list ')'
+ { as_needed = $<integer>4; }
;
sections:
ENTRY '(' NAME ')'
{ lang_add_entry ($3, FALSE); }
| assignment end
+ | ASSERT_K {ldlex_expression ();} '(' exp ',' NAME ')'
+ { ldlex_popstate ();
+ lang_add_assignment (exp_assert ($4, $6)); }
;
/* The '*' and '?' cases are there because the lexer returns them as
wildcard_name
{
$$.name = $1;
- $$.sorted = FALSE;
+ $$.sorted = none;
$$.exclude_name_list = NULL;
}
| EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name
{
$$.name = $5;
- $$.sorted = FALSE;
+ $$.sorted = none;
$$.exclude_name_list = $3;
}
- | SORT '(' wildcard_name ')'
+ | SORT_BY_NAME '(' wildcard_name ')'
+ {
+ $$.name = $3;
+ $$.sorted = by_name;
+ $$.exclude_name_list = NULL;
+ }
+ | SORT_BY_ALIGNMENT '(' wildcard_name ')'
{
$$.name = $3;
- $$.sorted = TRUE;
+ $$.sorted = by_alignment;
+ $$.exclude_name_list = NULL;
+ }
+ | SORT_BY_NAME '(' SORT_BY_ALIGNMENT '(' wildcard_name ')' ')'
+ {
+ $$.name = $5;
+ $$.sorted = by_name_alignment;
+ $$.exclude_name_list = NULL;
+ }
+ | SORT_BY_NAME '(' SORT_BY_NAME '(' wildcard_name ')' ')'
+ {
+ $$.name = $5;
+ $$.sorted = by_name;
+ $$.exclude_name_list = NULL;
+ }
+ | SORT_BY_ALIGNMENT '(' SORT_BY_NAME '(' wildcard_name ')' ')'
+ {
+ $$.name = $5;
+ $$.sorted = by_alignment_name;
$$.exclude_name_list = NULL;
}
- | SORT '(' EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name ')'
+ | SORT_BY_ALIGNMENT '(' SORT_BY_ALIGNMENT '(' wildcard_name ')' ')'
+ {
+ $$.name = $5;
+ $$.sorted = by_alignment;
+ $$.exclude_name_list = NULL;
+ }
+ | SORT_BY_NAME '(' EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name ')'
{
$$.name = $7;
- $$.sorted = TRUE;
+ $$.sorted = by_name;
$$.exclude_name_list = $5;
}
;
tmp = (struct name_list *) xmalloc (sizeof *tmp);
tmp->name = $2;
tmp->next = $1;
- $$ = tmp;
+ $$ = tmp;
}
|
wildcard_name
struct wildcard_spec tmp;
tmp.name = $1;
tmp.exclude_name_list = NULL;
- tmp.sorted = FALSE;
+ tmp.sorted = none;
lang_add_wild (&tmp, NULL, ldgram_had_keep);
}
| '[' file_NAME_list ']'
assignment end
| CREATE_OBJECT_SYMBOLS
{
- lang_add_attribute(lang_object_symbols_statement_enum);
+ lang_add_attribute(lang_object_symbols_statement_enum);
}
| ';'
| CONSTRUCTORS
{
-
- lang_add_attribute(lang_constructors_statement_enum);
+
+ lang_add_attribute(lang_constructors_statement_enum);
}
- | SORT '(' CONSTRUCTORS ')'
+ | SORT_BY_NAME '(' CONSTRUCTORS ')'
{
constructors_sorted = TRUE;
lang_add_attribute (lang_constructors_statement_enum);
{
lang_add_data ((int) $1, $3);
}
-
+
| FILL '(' fill_exp ')'
{
lang_add_fill ($3);
statement_list statement
| statement
;
-
+
statement_list_opt:
/* empty */
| statement_list
memory_spec: NAME
- { region = lang_memory_region_lookup($1); }
+ { region = lang_memory_region_lookup ($1, TRUE); }
attributes_opt ':'
origin_spec opt_comma length_spec
{}
| NOFLOAT
{ lang_float(FALSE); }
;
-
+
nocrossref_list:
/* empty */
{
}
;
-mustbe_exp: { ldlex_expression(); }
+mustbe_exp: { ldlex_expression (); }
exp
- { ldlex_popstate(); $$=$2;}
+ { ldlex_popstate (); $$=$2;}
;
exp :
'-' exp %prec UNARY
- { $$ = exp_unop('-', $2); }
+ { $$ = exp_unop ('-', $2); }
| '(' exp ')'
{ $$ = $2; }
| NEXT '(' exp ')' %prec UNARY
- { $$ = exp_unop((int) $1,$3); }
+ { $$ = exp_unop ((int) $1,$3); }
| '!' exp %prec UNARY
- { $$ = exp_unop('!', $2); }
+ { $$ = exp_unop ('!', $2); }
| '+' exp %prec UNARY
{ $$ = $2; }
| '~' exp %prec UNARY
- { $$ = exp_unop('~', $2);}
+ { $$ = exp_unop ('~', $2);}
| exp '*' exp
- { $$ = exp_binop('*', $1, $3); }
+ { $$ = exp_binop ('*', $1, $3); }
| exp '/' exp
- { $$ = exp_binop('/', $1, $3); }
+ { $$ = exp_binop ('/', $1, $3); }
| exp '%' exp
- { $$ = exp_binop('%', $1, $3); }
+ { $$ = exp_binop ('%', $1, $3); }
| exp '+' exp
- { $$ = exp_binop('+', $1, $3); }
+ { $$ = exp_binop ('+', $1, $3); }
| exp '-' exp
- { $$ = exp_binop('-' , $1, $3); }
+ { $$ = exp_binop ('-' , $1, $3); }
| exp LSHIFT exp
- { $$ = exp_binop(LSHIFT , $1, $3); }
+ { $$ = exp_binop (LSHIFT , $1, $3); }
| exp RSHIFT exp
- { $$ = exp_binop(RSHIFT , $1, $3); }
+ { $$ = exp_binop (RSHIFT , $1, $3); }
| exp EQ exp
- { $$ = exp_binop(EQ , $1, $3); }
+ { $$ = exp_binop (EQ , $1, $3); }
| exp NE exp
- { $$ = exp_binop(NE , $1, $3); }
+ { $$ = exp_binop (NE , $1, $3); }
| exp LE exp
- { $$ = exp_binop(LE , $1, $3); }
+ { $$ = exp_binop (LE , $1, $3); }
| exp GE exp
- { $$ = exp_binop(GE , $1, $3); }
+ { $$ = exp_binop (GE , $1, $3); }
| exp '<' exp
- { $$ = exp_binop('<' , $1, $3); }
+ { $$ = exp_binop ('<' , $1, $3); }
| exp '>' exp
- { $$ = exp_binop('>' , $1, $3); }
+ { $$ = exp_binop ('>' , $1, $3); }
| exp '&' exp
- { $$ = exp_binop('&' , $1, $3); }
+ { $$ = exp_binop ('&' , $1, $3); }
| exp '^' exp
- { $$ = exp_binop('^' , $1, $3); }
+ { $$ = exp_binop ('^' , $1, $3); }
| exp '|' exp
- { $$ = exp_binop('|' , $1, $3); }
+ { $$ = exp_binop ('|' , $1, $3); }
| exp '?' exp ':' exp
- { $$ = exp_trinop('?' , $1, $3, $5); }
+ { $$ = exp_trinop ('?' , $1, $3, $5); }
| exp ANDAND exp
- { $$ = exp_binop(ANDAND , $1, $3); }
+ { $$ = exp_binop (ANDAND , $1, $3); }
| exp OROR exp
- { $$ = exp_binop(OROR , $1, $3); }
+ { $$ = exp_binop (OROR , $1, $3); }
| DEFINED '(' NAME ')'
- { $$ = exp_nameop(DEFINED, $3); }
+ { $$ = exp_nameop (DEFINED, $3); }
| INT
{ $$ = exp_bigintop ($1.integer, $1.str); }
| SIZEOF_HEADERS
- { $$ = exp_nameop(SIZEOF_HEADERS,0); }
+ { $$ = exp_nameop (SIZEOF_HEADERS,0); }
| SIZEOF '(' NAME ')'
- { $$ = exp_nameop(SIZEOF,$3); }
+ { $$ = exp_nameop (SIZEOF,$3); }
| ADDR '(' NAME ')'
- { $$ = exp_nameop(ADDR,$3); }
+ { $$ = exp_nameop (ADDR,$3); }
| LOADADDR '(' NAME ')'
- { $$ = exp_nameop(LOADADDR,$3); }
+ { $$ = exp_nameop (LOADADDR,$3); }
| ABSOLUTE '(' exp ')'
- { $$ = exp_unop(ABSOLUTE, $3); }
+ { $$ = exp_unop (ABSOLUTE, $3); }
| ALIGN_K '(' exp ')'
- { $$ = exp_unop(ALIGN_K,$3); }
+ { $$ = 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); }
+ { $$ = exp_unop (DATA_SEGMENT_END, $3); }
+ | SEGMENT_START '(' NAME ',' exp ')'
+ { /* The operands to the expression node are
+ placed in the opposite order from the way
+ in which they appear in the script as
+ that allows us to reuse more code in
+ fold_binary. */
+ $$ = exp_binop (SEGMENT_START,
+ $5,
+ exp_nameop (NAME, $3)); }
| BLOCK '(' exp ')'
- { $$ = exp_unop(ALIGN_K,$3); }
+ { $$ = exp_unop (ALIGN_K,$3); }
| NAME
- { $$ = exp_nameop(NAME,$1); }
+ { $$ = 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 ')'
+ { $$ = exp_nameop (LENGTH, $3); }
;
| { $$ = 0; }
;
+opt_subalign:
+ SUBALIGN '(' exp ')' { $$ = $3; }
+ | { $$ = 0; }
+ ;
+
+sect_constraint:
+ ONLY_IF_RO { $$ = ONLY_IF_RO; }
+ | ONLY_IF_RW { $$ = ONLY_IF_RW; }
+ | { $$ = 0; }
+ ;
+
section: NAME { ldlex_expression(); }
- opt_exp_with_type
- opt_at { ldlex_popstate (); ldlex_script (); }
+ opt_exp_with_type
+ opt_at
+ opt_subalign { ldlex_popstate (); ldlex_script (); }
+ sect_constraint
'{'
{
lang_enter_output_section_statement($1, $3,
sectype,
- 0, 0, 0, $4);
+ 0, $5, $4, $7);
}
- statement_list_opt
+ statement_list_opt
'}' { ldlex_popstate (); ldlex_expression (); }
memspec_opt memspec_at_opt phdr_opt fill_opt
{
ldlex_popstate ();
- lang_leave_output_section_statement ($14, $11, $13, $12);
+ lang_leave_output_section_statement ($16, $13, $15, $14);
}
opt_comma
{}
| OVERLAY
{ ldlex_expression (); }
- opt_exp_without_type opt_nocrossrefs opt_at
+ opt_exp_without_type opt_nocrossrefs opt_at opt_subalign
{ ldlex_popstate (); ldlex_script (); }
- '{'
+ '{'
{
- lang_enter_overlay ($3);
+ lang_enter_overlay ($3, $6);
}
overlay_section
'}'
{
ldlex_popstate ();
lang_leave_overlay ($5, (int) $4,
- $15, $12, $14, $13);
+ $16, $13, $15, $14);
}
opt_comma
| /* The GROUP case is just enough to support the gcc
memspec_opt:
'>' NAME
{ $$ = $2; }
- | { $$ = "*default*"; }
+ | { $$ = DEFAULT_MEMORY_REGION; }
;
phdr_opt:
{
"PT_NULL", "PT_LOAD", "PT_DYNAMIC",
"PT_INTERP", "PT_NOTE", "PT_SHLIB",
- "PT_PHDR"
+ "PT_PHDR", "PT_TLS"
};
s = $1->name.name;
$$ = exp_intop (i);
break;
}
+ if (i == sizeof phdr_types / sizeof phdr_types[0])
+ {
+ if (strcmp (s, "PT_GNU_EH_FRAME") == 0)
+ $$ = exp_intop (0x6474e550);
+ else if (strcmp (s, "PT_GNU_STACK") == 0)
+ $$ = exp_intop (0x6474e551);
+ else
+ {
+ einfo (_("\
+%X%P:%S: unknown phdr type `%s' (try integer literal)\n"),
+ s);
+ $$ = exp_intop (0);
+ }
+ }
}
}
;
{
$$ = lang_new_vers_pattern ($1, $3, ldgram_vers_current_lang);
}
+ | vers_defns ';' EXTERN NAME '{'
+ {
+ $<name>$ = ldgram_vers_current_lang;
+ ldgram_vers_current_lang = $4;
+ }
+ vers_defns opt_semicolon '}'
+ {
+ $$ = $7;
+ ldgram_vers_current_lang = $<name>6;
+ }
| EXTERN NAME '{'
{
$<name>$ = ldgram_vers_current_lang;
ldgram_vers_current_lang = $2;
}
- vers_defns '}'
+ vers_defns opt_semicolon '}'
{
$$ = $5;
ldgram_vers_current_lang = $<name>4;
}
;
+opt_semicolon:
+ /* empty */
+ | ';'
+ ;
+
%%
void
-yyerror(arg)
+yyerror(arg)
const char *arg;
-{
+{
if (ldfile_assumed_script)
einfo (_("%P:%s: file format not recognized; treating as linker script\n"),
ldfile_input_filename);