From 8b46c09925a80623c289e346c12921bc09fd1678 Mon Sep 17 00:00:00 2001 From: Niklas Hallqvist Date: Mon, 8 Jan 1996 11:10:27 +0000 Subject: Initial GNU binutils 2.6 import --- gnu/usr.bin/binutils/ld/ldgram.y | 681 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 681 insertions(+) create mode 100644 gnu/usr.bin/binutils/ld/ldgram.y (limited to 'gnu/usr.bin/binutils/ld/ldgram.y') diff --git a/gnu/usr.bin/binutils/ld/ldgram.y b/gnu/usr.bin/binutils/ld/ldgram.y new file mode 100644 index 00000000000..b08d00a58c1 --- /dev/null +++ b/gnu/usr.bin/binutils/ld/ldgram.y @@ -0,0 +1,681 @@ +/* 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., 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 "ldlex.h" + +#ifndef YYDEBUG +#define YYDEBUG 1 +#endif + +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 exp opt_exp_with_type mustbe_exp opt_at +%type fill_opt +%type memspec_opt casesymlist +%token INT +%token NAME LNAME +%type length + +%right PLUSEQ MINUSEQ MULTEQ DIVEQ '=' LSHIFTEQ RSHIFTEQ ANDEQ OREQ +%right '?' ':' +%left OROR +%left ANDAND +%left '|' +%left '^' +%left '&' +%left EQ NE +%left '<' '>' LE GE +%left LSHIFT RSHIFT + +%left '+' '-' +%left '*' '/' '%' + +%right UNARY +%token END +%left '(' +%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 LNAME DEFINED TARGET_K SEARCH_DIR MAP ENTRY +%token SIZEOF NEXT ADDR +%token STARTUP HLL SYSLIB FLOAT NOFLOAT +%token ORIGIN FILL +%token LENGTH CREATE_OBJECT_SYMBOLS INPUT GROUP OUTPUT CONSTRUCTORS +%token ALIGNMOD AT PROVIDE +%type assign_op atype +%type 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 CASE EXTERN START + +%% + +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); } + | 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 ($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, (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 + ; + +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 + ; + +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 + { $$ = '|'; } + + ; + +end: ';' | ',' + ; + + +assignment: + NAME '=' mustbe_exp + { + lang_add_assignment (exp_assop ($2, $1, $3)); + } + | NAME assign_op mustbe_exp + { + lang_add_assignment (exp_assop ('=', $1, + exp_binop ($2, + exp_nameop (NAME, + $1), + $3))); + } + | PROVIDE '(' NAME '=' mustbe_exp ')' + { + lang_add_assignment (exp_provide ($3, $5)); + } + ; + + +opt_comma: + ',' | ; + + +memory: + MEMORY '{' memory_spec memory_spec_list '}' + ; + +memory_spec_list: + memory_spec_list memory_spec + | memory_spec_list ',' memory_spec + | + ; + + +memory_spec: NAME + { region = lang_memory_region_lookup($1); } + attributes_opt ':' + origin_spec opt_comma length_spec + + ; origin_spec: + ORIGIN '=' mustbe_exp + { region->current = + region->origin = + exp_get_vma($3, 0L,"origin", lang_first_phase_enum); +} + ; length_spec: + LENGTH '=' mustbe_exp + { region->length = exp_get_vma($3, + ~((bfd_vma)0), + "length", + lang_first_phase_enum); + } + + +attributes_opt: + '(' NAME ')' + { + lang_set_flags(®ion->flags, $2); + } + | + + ; + +startup: + STARTUP '(' filename ')' + { lang_startup($3); } + ; + +high_level_library: + HLL '(' high_level_library_NAME_list ')' + | HLL '(' ')' + { ldemul_hll((char *)NULL); } + ; + +high_level_library_NAME_list: + high_level_library_NAME_list opt_comma filename + { ldemul_hll($3); } + | filename + { ldemul_hll($1); } + + ; + +low_level_library: + SYSLIB '(' low_level_library_NAME_list ')' + ; low_level_library_NAME_list: + low_level_library_NAME_list opt_comma filename + { ldemul_syslib($3); } + | + ; + +floating_point_support: + FLOAT + { lang_float(true); } + | NOFLOAT + { lang_float(false); } + ; + + +mustbe_exp: { ldlex_expression(); } + exp + { ldlex_popstate(); $$=$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); } + | BLOCK '(' 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; } + ; + +atype: + '(' type ')' + | /* EMPTY */ { typebits = 0; } + ; + + +opt_exp_with_type: + exp atype ':' { $$ = $1; ;} + | atype ':' { $$= (etree_type *)NULL; } + ; + +memspec_opt: + '>' NAME + { $$ = $2; } + | { $$ = "*default*"; } + ; +%% +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); +} -- cgit v1.2.3