mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:51:15 +08:00
626 lines
12 KiB
Plaintext
626 lines
12 KiB
Plaintext
/* A YACC grammer to parse a superset of the AT&T linker scripting languaue.
|
|
Copyright (C) 1991, 1993 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., 675 Mass Ave, Cambridge, MA 02139, 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 "ldlex.h"
|
|
|
|
static int typebits;
|
|
|
|
lang_memory_region_type *region;
|
|
|
|
|
|
char *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;
|
|
|
|
|
|
#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;
|
|
int token;
|
|
union etree_union *etree;
|
|
}
|
|
|
|
%type <etree> exp opt_exp_with_type mustbe_exp opt_at
|
|
%type <integer> fill_opt
|
|
%type <name> memspec_opt
|
|
%token <integer> INT
|
|
%token <name> NAME
|
|
%type <integer> length
|
|
|
|
%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 QUAD LONG SHORT BYTE
|
|
%token SECTIONS
|
|
%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 DEFINED TARGET_K SEARCH_DIR MAP ENTRY
|
|
%token <integer> SIZEOF NEXT ADDR
|
|
%token STARTUP HLL SYSLIB FLOAT NOFLOAT
|
|
%token ORIGIN FILL
|
|
%token LENGTH CREATE_OBJECT_SYMBOLS INPUT OUTPUT CONSTRUCTORS
|
|
%token ALIGNMOD AT
|
|
%type <token> assign_op
|
|
%type <name> filename
|
|
%token CHIP LIST SECT ABSOLUTE LOAD NEWLINE ENDWORD ORDER NAMEWORD
|
|
%token FORMAT PUBLIC DEFSYMEND BASE ALIAS TRUNCATE REL
|
|
%token INPUT_SCRIPT INPUT_MRI_SCRIPT INPUT_DEFSYM
|
|
|
|
%%
|
|
|
|
file:
|
|
INPUT_SCRIPT script_file
|
|
| INPUT_MRI_SCRIPT mri_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();
|
|
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); }
|
|
| 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); }
|
|
|
|
|
;
|
|
|
|
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); }
|
|
;
|
|
|
|
script_file:
|
|
{
|
|
ldlex_both();
|
|
}
|
|
ifile_list
|
|
{
|
|
ldlex_popstate();
|
|
}
|
|
;
|
|
|
|
|
|
ifile_list:
|
|
ifile_list ifile_p1
|
|
|
|
|
;
|
|
|
|
|
|
|
|
ifile_p1:
|
|
memory
|
|
| sections
|
|
| startup
|
|
| high_level_library
|
|
| low_level_library
|
|
| floating_point_support
|
|
| statement_anywhere
|
|
| ';'
|
|
| 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, 1); }
|
|
| OUTPUT_ARCH '(' NAME ')'
|
|
{ ldfile_set_output_arch($3); }
|
|
| FORCE_COMMON_ALLOCATION
|
|
{ command_line.force_common_definition = true ; }
|
|
| INPUT '(' input_list ')'
|
|
| MAP '(' filename ')'
|
|
{ lang_add_map($3); }
|
|
| INCLUDE filename
|
|
{ ldfile_open_command_file($2); } ifile_list END
|
|
;
|
|
|
|
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); }
|
|
;
|
|
|
|
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, 0); }
|
|
| assignment end
|
|
;
|
|
|
|
file_NAME_list:
|
|
NAME
|
|
{ lang_add_wild($1, current_file); }
|
|
| file_NAME_list opt_comma NAME
|
|
{ lang_add_wild($3, current_file); }
|
|
;
|
|
|
|
input_section_spec:
|
|
NAME
|
|
{
|
|
lang_add_wild((char *)NULL, $1);
|
|
}
|
|
| '['
|
|
{
|
|
current_file = (char *)NULL;
|
|
}
|
|
file_NAME_list
|
|
']'
|
|
| NAME
|
|
{
|
|
current_file =$1;
|
|
}
|
|
'(' file_NAME_list ')'
|
|
| '*'
|
|
{
|
|
current_file = (char *)NULL;
|
|
}
|
|
'(' file_NAME_list ')'
|
|
;
|
|
|
|
statement:
|
|
assignment end
|
|
| CREATE_OBJECT_SYMBOLS
|
|
{
|
|
lang_add_attribute(lang_object_symbols_statement_enum);
|
|
}
|
|
| ';'
|
|
| CONSTRUCTORS
|
|
{
|
|
|
|
lang_add_attribute(lang_constructors_statement_enum);
|
|
}
|
|
| input_section_spec
|
|
| length '(' exp ')'
|
|
{
|
|
lang_add_data((int) $1,$3);
|
|
}
|
|
|
|
| FILL '(' 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
|
|
{ $$ = $1; }
|
|
| LONG
|
|
{ $$ = $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)));
|
|
}
|
|
|
|
;
|
|
|
|
|
|
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(®ion->flags, $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); }
|
|
;
|
|
|
|
|
|
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 ')'
|
|
{ $$ = exp_nameop(ADDR,$3); }
|
|
| ABSOLUTE '(' exp ')'
|
|
{ $$ = exp_unop(ABSOLUTE, $3); }
|
|
| ALIGN_K '(' exp ')'
|
|
{ $$ = exp_unop(ALIGN_K,$3); }
|
|
| NAME
|
|
{ $$ = exp_nameop(NAME,$1); }
|
|
;
|
|
|
|
|
|
opt_at:
|
|
AT '(' exp ')' { $$ = $3; }
|
|
| { $$ = 0; }
|
|
;
|
|
|
|
section: NAME { ldlex_expression(); }
|
|
opt_exp_with_type
|
|
opt_at { ldlex_popstate(); }
|
|
'{'
|
|
{
|
|
lang_enter_output_section_statement($1,$3,typebits,0,0,0,$4);
|
|
}
|
|
statement_list_opt
|
|
'}' {ldlex_expression();} memspec_opt fill_opt
|
|
{
|
|
ldlex_popstate();
|
|
lang_leave_output_section_statement($12, $11);
|
|
}
|
|
opt_comma
|
|
|
|
;
|
|
|
|
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; }
|
|
;
|
|
|
|
|
|
opt_exp_with_type:
|
|
exp ':' { $$ = $1; typebits =0;}
|
|
| exp '(' type ')' ':' { $$ = $1; }
|
|
| ':' { $$= (etree_type *)NULL; typebits = 0; }
|
|
| '(' type ')' ':' { $$= (etree_type *)NULL; }
|
|
;
|
|
|
|
memspec_opt:
|
|
'>' NAME
|
|
{ $$ = $2; }
|
|
| { $$ = "*default*"; }
|
|
;
|
|
%%
|
|
void
|
|
yyerror(arg)
|
|
const char *arg;
|
|
{
|
|
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);
|
|
}
|