/* A YACC grammer to parse a superset of the AT&T linker scripting languaue.
- Copyright (C) 1991, 1993 Free Software Foundation, Inc.
+ Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000
+ Free Software Foundation, Inc.
Written by Steve Chamberlain of Cygnus Support (steve@cygnus.com).
This file is part of GNU ld.
#include "ldmisc.h"
#include "ldmain.h"
#include "mri.h"
+#include "ldctor.h"
#include "ldlex.h"
#ifndef YYDEBUG
#define YYDEBUG 1
#endif
-static int typebits;
+static enum section_type sectype;
lang_memory_region_type *region;
-
-char *current_file;
+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];
%union {
bfd_vma integer;
char *name;
+ const char *cname;
+ struct wildcard_spec wildcard;
+ struct name_list *name_list;
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
+%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
+%type <name_list> exclude_name_list
+%type <name> memspec_opt casesymlist
+%type <name> memspec_at_opt
+%type <cname> wildcard_name
+%type <wildcard> wildcard_spec
%token <integer> INT
%token <name> NAME LNAME
-%type <integer> length
+%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> '?' ':'
%right UNARY
%token END
%left <token> '('
-%token <token> ALIGN_K BLOCK QUAD LONG SHORT BYTE
-%token SECTIONS
+%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 MEMORY DEFSYMEND
%token NOLOAD DSECT COPY INFO OVERLAY
%token NAME LNAME DEFINED TARGET_K SEARCH_DIR MAP ENTRY
-%token <integer> SIZEOF NEXT ADDR
-%token STARTUP HLL SYSLIB FLOAT NOFLOAT
+%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
+%type <token> assign_op atype attributes_opt
%type <name> filename
-%token CHIP LIST SECT ABSOLUTE LOAD NEWLINE ENDWORD ORDER NAMEWORD
+%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
;
/* SYNTAX WITHIN AN MRI SCRIPT FILE */
mri_script_file:
- { ldlex_mri_script();
- PUSH_ERROR("MRI style script");
+ {
+ ldlex_mri_script ();
+ PUSH_ERROR (_("MRI style script"));
}
mri_script_lines
- { ldlex_popstate();
- POP_ERROR();
+ {
+ ldlex_popstate ();
+ mri_draw_tree ();
+ POP_ERROR ();
}
;
CHIP exp
| CHIP exp ',' exp
| NAME {
- einfo("%P%F: unrecognised keyword in MRI style script '%s'\n",$1);
+ einfo(_("%P%F: unrecognised keyword in MRI style script '%s'\n"),$1);
}
| LIST {
config.map_filename = "-";
{ 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
| INCLUDE filename
{ ldfile_open_command_file ($2); } mri_script_lines END
| START NAME
- { lang_add_entry ($2, 0); }
+ { lang_add_entry ($2, false); }
|
;
;
casesymlist:
- /* empty */
+ /* empty */ { $$ = NULL; }
| NAME
| casesymlist ',' NAME
;
extern_name_list:
NAME
{ ldlang_add_undef ($1); }
+ | extern_name_list NAME
+ { ldlang_add_undef ($2); }
| extern_name_list ',' NAME
{ ldlang_add_undef ($3); }
;
ifile_p1:
memory
| sections
+ | phdrs
| startup
| high_level_library
| low_level_library
| floating_point_support
| statement_anywhere
+ | version
| ';'
| TARGET_K '(' NAME ')'
{ lang_add_target($3); }
{ lang_add_map($3); }
| INCLUDE filename
{ ldfile_open_command_file($2); } ifile_list END
+ | NOCROSSREFS '(' nocrossref_list ')'
+ {
+ lang_add_nocrossref ($3);
+ }
+ | EXTERN '(' extern_name_list ')'
;
input_list:
statement_anywhere:
ENTRY '(' NAME ')'
- { lang_add_entry ($3, 0); }
+ { lang_add_entry ($3, false); }
| assignment end
;
-file_NAME_list:
+/* The '*' and '?' cases are there because the lexer returns them as
+ separate tokens rather than as NAME. */
+wildcard_name:
NAME
- { lang_add_wild($1, current_file); }
- | file_NAME_list opt_comma NAME
- { lang_add_wild($3, current_file); }
+ {
+ $$ = $1;
+ }
+ | '*'
+ {
+ $$ = "*";
+ }
+ | '?'
+ {
+ $$ = "?";
+ }
;
-input_section_spec:
+wildcard_spec:
+ wildcard_name
+ {
+ $$.name = $1;
+ $$.sorted = false;
+ $$.exclude_name_list = NULL;
+ }
+ | EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name
+ {
+ $$.name = $5;
+ $$.sorted = false;
+ $$.exclude_name_list = $3;
+ }
+ | SORT '(' wildcard_name ')'
+ {
+ $$.name = $3;
+ $$.sorted = true;
+ $$.exclude_name_list = NULL;
+ }
+ | SORT '(' EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name ')'
+ {
+ $$.name = $7;
+ $$.sorted = true;
+ $$.exclude_name_list = $5;
+ }
+ ;
+
+
+
+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:
+ wildcard_spec
+ {
+ lang_add_wild ($1.name, $1.sorted,
+ current_file.name,
+ current_file.sorted,
+ ldgram_had_keep, $1.exclude_name_list);
+ }
+ | 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_list);
+ }
+ ;
+
+input_section_spec_no_keep:
NAME
- {
- lang_add_wild((char *)NULL, $1);
- }
- | '['
{
- current_file = (char *)NULL;
+ lang_add_wild (NULL, false, $1, false,
+ ldgram_had_keep, NULL);
}
- file_NAME_list
- ']'
- | NAME
+ | '['
{
- current_file =$1;
+ current_file.name = NULL;
+ current_file.sorted = false;
}
- '(' file_NAME_list ')'
- | '*'
+ file_NAME_list ']'
+ | wildcard_spec
{
- current_file = (char *)NULL;
+ 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_constructors_statement_enum);
}
+ | SORT '(' CONSTRUCTORS ')'
+ {
+ constructors_sorted = true;
+ lang_add_attribute (lang_constructors_statement_enum);
+ }
| input_section_spec
- | length '(' exp ')'
+ | length '(' mustbe_exp ')'
{
lang_add_data((int) $1,$3);
}
- | FILL '(' exp ')'
+ | FILL '(' mustbe_exp ')'
{
lang_add_fill
(exp_get_value_int($3,
length:
QUAD
{ $$ = $1; }
+ | SQUAD
+ { $$ = $1; }
| LONG
{ $$ = $1; }
| SHORT
region->origin =
exp_get_vma($3, 0L,"origin", lang_first_phase_enum);
}
- ; length_spec:
+ ;
+
+length_spec:
LENGTH '=' mustbe_exp
{ region->length = exp_get_vma($3,
~((bfd_vma)0),
"length",
lang_first_phase_enum);
}
-
+ ;
attributes_opt:
- '(' NAME ')'
- {
- lang_set_flags(®ion->flags, $2);
- }
- |
-
+ /* empty */
+ { /* dummy action to avoid bison 1.25 error message */ }
+ | '(' attributes_list ')'
+ ;
+
+attributes_list:
+ attributes_string
+ | attributes_list attributes_string
+ ;
+
+attributes_string:
+ NAME
+ { lang_set_flags (region, $1, 0); }
+ | '!' NAME
+ { lang_set_flags (region, $2, 1); }
;
startup:
{ lang_float(false); }
;
+nocrossref_list:
+ /* empty */
+ {
+ $$ = 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
{ $$ = exp_nameop(SIZEOF,$3); }
| ADDR '(' NAME ')'
{ $$ = exp_nameop(ADDR,$3); }
+ | LOADADDR '(' NAME ')'
+ { $$ = exp_nameop(LOADADDR,$3); }
| ABSOLUTE '(' exp ')'
{ $$ = exp_unop(ABSOLUTE, $3); }
| ALIGN_K '(' exp ')'
{ $$ = exp_unop(ALIGN_K,$3); }
| NAME
{ $$ = 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 ')'
+ { $$ = exp_assert ($3, $5); }
;
+memspec_at_opt:
+ AT '>' NAME { $$ = $3; }
+ | { $$ = "*default*"; }
+ ;
+
opt_at:
AT '(' exp ')' { $$ = $3; }
| { $$ = 0; }
section: NAME { ldlex_expression(); }
opt_exp_with_type
- opt_at { ldlex_popstate(); }
+ opt_at { ldlex_popstate (); ldlex_script (); }
'{'
{
- lang_enter_output_section_statement($1,$3,typebits,0,0,0,$4);
+ lang_enter_output_section_statement($1, $3,
+ sectype,
+ 0, 0, 0, $4);
}
statement_list_opt
- '}' {ldlex_expression();} memspec_opt fill_opt
+ '}' { ldlex_popstate (); ldlex_expression (); }
+ memspec_opt memspec_at_opt phdr_opt fill_opt
{
- ldlex_popstate();
- lang_leave_output_section_statement($12, $11);
+ ldlex_popstate ();
+ lang_leave_output_section_statement ($14, $11, $13, $12);
}
-opt_comma
-
+ opt_comma
+ | OVERLAY
+ { ldlex_expression (); }
+ opt_exp_without_type opt_nocrossrefs opt_at
+ { ldlex_popstate (); ldlex_script (); }
+ '{'
+ {
+ lang_enter_overlay ($3, $5, (int) $4);
+ }
+ overlay_section
+ '}'
+ { ldlex_popstate (); ldlex_expression (); }
+ memspec_opt memspec_at_opt phdr_opt fill_opt
+ {
+ ldlex_popstate ();
+ lang_leave_overlay ($15, $12, $14, $13);
+ }
+ opt_comma
+ | /* The GROUP case is just enough to support the gcc
+ svr3.ifile script. It is not intended to be full
+ support. I'm not even sure what GROUP is supposed
+ to mean. */
+ GROUP { ldlex_expression (); }
+ opt_exp_with_type
+ {
+ ldlex_popstate ();
+ lang_add_assignment (exp_assop ('=', ".", $3));
+ }
+ '{' sec_or_group_p1 '}'
;
type:
- NOLOAD { typebits = SEC_NEVER_LOAD; }
- | DSECT { typebits = 0; }
- | COPY { typebits = 0; }
- | INFO { typebits = 0; }
- | OVERLAY { typebits = 0; }
- | { typebits = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; }
+ NOLOAD { sectype = noload_section; }
+ | DSECT { sectype = dsect_section; }
+ | COPY { sectype = copy_section; }
+ | INFO { sectype = info_section; }
+ | OVERLAY { sectype = overlay_section; }
;
+atype:
+ '(' type ')'
+ | /* EMPTY */ { sectype = normal_section; }
+ | '(' ')' { sectype = normal_section; }
+ ;
opt_exp_with_type:
- exp ':' { $$ = $1; typebits =0;}
- | exp '(' type ')' ':' { $$ = $1; }
- | ':' { $$= (etree_type *)NULL; typebits = 0; }
- | '(' type ')' ':' { $$= (etree_type *)NULL; }
+ exp atype ':' { $$ = $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
+ { $$ = 1; }
;
memspec_opt:
{ $$ = $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",
+ 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]);
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