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- /* A YACC grammer to parse a superset of the AT&T linker scripting languaue.
- Copyright (C) 1991 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 "ld.h"
- #include "ldexp.h"
- #include "ldver.h"
- #include "ldlang.h"
- #include "ldemul.h"
- #include "ldfile.h"
- #include "ldmisc.h"
- #include "mri.h"
-
- #define YYDEBUG 1
-
- boolean option_v;
- extern unsigned int lineno;
- extern boolean trace_files;
- extern boolean write_map;
- extern boolean option_longmap;
- extern int g_switch_value;
- boolean hex_mode;
- static int typebits;
- strip_symbols_type strip_symbols=STRIP_NONE;
- discard_locals_type discard_locals=DISCARD_NONE;
-
-
- lang_memory_region_type *region;
-
-
- lang_memory_region_type *lang_memory_region_lookup();
- lang_output_section_statement_type *lang_output_section_statement_lookup();
- etree_type *lang_atin();
- #ifdef __STDC__
-
- void lang_add_data(int type, union etree_union *exp);
- void lang_enter_output_section_statement(char *output_section_statement_name, etree_type *address_exp, int flags, bfd_vma block_value,etree_type*,etree_type*, etree_type*);
-
- #else
-
- void lang_add_data();
- void lang_enter_output_section_statement();
-
- #endif /* __STDC__ */
-
- extern args_type command_line;
- 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;
- /* LOCALS */
-
-
- #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;
- int voidval;
- char *name;
- int token;
- union etree_union *etree;
- struct sec *section;
- struct lang_output_section_statement_struct *output_section_statement;
- union lang_statement_union **statement_ptr;
- int lineno;
- struct {
- FILE *file;
- char *name;
- unsigned int lineno;
- } state;
-
-
- }
-
- %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> '*' '/' '%'
-
- /*%token <token> '+' '-' '*' '/' '%'*/
- %right UNARY
- %token END
- %left <token> '('
- %token <token> ALIGN_K BLOCK 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 OPTION_e OPTION_c OPTION_noinhibit_exec OPTION_s OPTION_S OPTION_sort_common
- %token OPTION_EB OPTION_EL OPTION_G OPTION_Gval
- %token OPTION_format OPTION_F OPTION_u OPTION_Bstatic OPTION_N
- %token <integer> SIZEOF NEXT ADDR
- %token OPTION_d OPTION_dc OPTION_dp OPTION_x OPTION_X OPTION_defsym
- %token OPTION_v OPTION_V OPTION_M OPTION_t STARTUP HLL SYSLIB FLOAT NOFLOAT
- %token OPTION_Map
- %token OPTION_n OPTION_r OPTION_o OPTION_b OPTION_R OPTION_relax
- %token <name> OPTION_l OPTION_L OPTION_T OPTION_Aarch OPTION_Tfile OPTION_Texp
- %token <name> OPTION_y
- %token OPTION_Ur
- %token ORIGIN FILL OPTION_g
- %token LENGTH CREATE_OBJECT_SYMBOLS INPUT OUTPUT CONSTRUCTORS
- %token OPTION_RETAIN_SYMBOLS_FILE 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
-
- %{
- ld_config_type config;
- %}
-
- %%
-
- file: command_line { lang_final(); };
-
-
- filename: NAME;
-
-
- command_line:
- command_line command_line_option
- |
- ;
-
- command_line_option:
- OPTION_Bstatic { }
- | OPTION_v
- {
- ldversion(0);
- option_v = true;
- }
- | OPTION_V
- {
- ldversion(1);
- option_v = true;
- }
- | OPTION_t {
- trace_files = true;
- }
- | OPTION_Map NAME
- {
- write_map = true;
- config.map_filename = $2;
- }
- | OPTION_M
- {
- config.map_filename = "-";
- }
- | OPTION_n {
- config.magic_demand_paged = false;
- }
- | OPTION_N {
- config.text_read_only = false;
- config.magic_demand_paged = false;
- }
- | OPTION_s {
- strip_symbols = STRIP_ALL;
- }
- | OPTION_S {
- strip_symbols = STRIP_DEBUGGER;
- }
- | OPTION_u NAME {
- ldlang_add_undef($2);
- }
-
- | OPTION_r {
- config.relocateable_output = true;
- config.build_constructors = false;
- config.magic_demand_paged = false;
- config.text_read_only = false;
- }
- | OPTION_Ur {
- config.relocateable_output = true;
- config.build_constructors = true;
- config.magic_demand_paged = false;
- config.text_read_only = false;
- }
- | OPTION_o filename
- {
- lang_add_output($2);
- }
- | OPTION_e NAME
- { lang_add_entry($2);
- }
- | OPTION_X {
- discard_locals = DISCARD_L;
- }
- | OPTION_x {
- discard_locals = DISCARD_ALL;
- }
-
- | OPTION_noinhibit_exec
- {
- force_make_executable = true;
- }
- | OPTION_sort_common {
- config.sort_common = true;
- }
- | OPTION_d {
- command_line.force_common_definition = true;
- }
-
- | OPTION_relax {
- command_line.relax = true;
- }
- | OPTION_dc
- {
- command_line.force_common_definition = true;
- }
- | OPTION_g
- {
- /* Ignored */
- }
- | OPTION_dp
- {
- command_line.force_common_definition = true;
- }
- | OPTION_format NAME
- {
- lang_add_target($2);
- }
- | OPTION_Texp
- { ldlex_expression();
- hex_mode = 16;
- }
- INT
- { ldlex_popstate();
- lang_section_start($1,exp_intop($3));
- hex_mode = 0;
- }
- | OPTION_y
- {
- add_ysym($1);
- }
- | OPTION_Aarch
- {
- ldfile_add_arch($1);
- }
- | OPTION_b NAME
- {
- lang_add_target($2);
- }
- | OPTION_L
- {
- ldfile_add_library_path($1);
- }
- | OPTION_F
- {
- /* Ignore */
- }
- | NAME
- { lang_add_input_file($1,lang_input_file_is_file_enum,
- (char *)NULL); }
- | OPTION_c filename
- { ldfile_open_command_file($2); } mri_script_file END { ldlex_command();}
-
- | OPTION_Tfile
- { ldfile_open_command_file($1); } script_file
- END { ldlex_command();}
-
- | OPTION_T filename
- { ldfile_open_command_file($2); } script_file
- END { ldlex_command();}
-
- | OPTION_l
- {
- lang_add_input_file($1,
- lang_input_file_is_l_enum,
- (char *)NULL);
- }
- | OPTION_R filename
- {
- lang_add_input_file($2,
- lang_input_file_is_symbols_only_enum,
- (char *)NULL);
- }
-
- | OPTION_defsym { ldlex_defsym(); }
- NAME '=' exp DEFSYMEND { ldlex_popstate();
- lang_add_assignment(exp_assop($4,$3,$5));
- }
- | OPTION_RETAIN_SYMBOLS_FILE filename
- { lang_add_keepsyms_file ($2); }
- | OPTION_EB
- {
- /* FIXME: This is currently ignored. It means
- ``produce a big-endian object file''. It could
- be used to select an output format. */
- }
- | OPTION_EL
- {
- /* FIXME: This is currently ignored. It means
- ``produce a little-endian object file''. It could
- be used to select an output format. */
- }
- | OPTION_G NAME
- {
- g_switch_value = atoi ($2);
- }
- | OPTION_Gval
- {
- g_switch_value = yylval.integer;
- }
- | '-' NAME
- { info("%P%F Unrecognized option -%s\n", $2); }
-
- | '{' script_file '}'
- ;
-
-
- /* 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 {
- write_map = true;
- 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,$4);}
- | BASE exp
- { mri_base($2); }
- | TRUNCATE INT
- { mri_truncate($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); }
- | OUTPUT '(' filename ')'
- { lang_add_output($3); }
- | OUTPUT_FORMAT '(' NAME ')'
- { lang_add_output_format($3); }
- | 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_file_enum,
- (char *)NULL); }
- | input_list ',' NAME
- { lang_add_input_file($3,lang_input_file_is_file_enum,
- (char *)NULL); }
- | input_list NAME
- { lang_add_input_file($2,
- lang_input_file_is_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); }
- | 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($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
- ;
-
- length:
- 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
- { $$ = exp_unop($1,$3); }
- | '!' exp %prec UNARY
- { $$ = 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; }
- | { $$ = 0; }
- ;
-
- section: NAME { ldlex_expression(); }
- opt_exp_with_type
- opt_at { ldlex_popstate(); }
- '{'
- {
- lang_enter_output_section_statement($1,$3,typebits,0,0,0,$4);
- }
- statement_list
- '}' {ldlex_expression();} fill_opt memspec_opt
- {
- ldlex_popstate();
- lang_leave_output_section_statement($11, $12);
- }
- opt_comma
-
- ;
-
- type:
- NOLOAD { typebits = SEC_NEVER_LOAD; }
- | DSECT { typebits = 0; }
- | COPY { typebits = 0; }
- | INFO { typebits = 0; }
- | OVERLAY { typebits = 0; }
- | { typebits = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; }
- ;
-
-
- opt_exp_with_type:
- exp ':' { $$ = $1; typebits =0;}
- | exp '(' type ')' ':' { $$ = $1; }
- | ':' { $$= (etree_type *)NULL; typebits = 0; }
- | '(' type ')' ':' { $$= (etree_type *)NULL; }
- ;
-
- memspec_opt:
- '>' NAME
- { $$ = $2; }
- | { $$ = "*default*"; }
- ;
- %%
- void
- yyerror(arg)
- char *arg;
- {
- if (error_index> 0 && error_index < ERROR_NAME_MAX)
- einfo("%P%F: %S syntax error in %s\n",error_names[error_index-1]);
- else
- einfo("%P%F: %S syntax error\n");
- }
-