X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=ld%2Fldgram.y;h=11c2f219c05d0c3b8f9cd2579faf41a831e4a396;hb=f908e960c5537c116f7123b6697d74db9853d9be;hp=91875791273ce923815e35ed147eb7a1115cfee8;hpb=4725fb48f5d3fc844e96e1fdcd05e9d43528f6f9;p=binutils-gdb.git diff --git a/ld/ldgram.y b/ld/ldgram.y index 91875791273..11c2f219c05 100644 --- a/ld/ldgram.y +++ b/ld/ldgram.y @@ -1,22 +1,23 @@ -/* A YACC grammer to parse a superset of the AT&T linker scripting languaue. - Copyright (C) 1991, 1993 Free Software Foundation, Inc. +/* A YACC grammar to parse a superset of the AT&T linker scripting language. + Copyright (C) 1991-2022 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 the GNU Binutils. -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 3 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., 675 Mass Ave, Cambridge, MA 02139, 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., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ %{ /* @@ -25,34 +26,31 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #define DONTDECLARE_MALLOC -#include "bfd.h" #include "sysdep.h" +#include "bfd.h" #include "bfdlink.h" -#include "ld.h" +#include "ctf-api.h" +#include "ld.h" #include "ldexp.h" #include "ldver.h" #include "ldlang.h" -#include "ldemul.h" #include "ldfile.h" +#include "ldemul.h" #include "ldmisc.h" #include "ldmain.h" #include "mri.h" +#include "ldctor.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; +static enum section_type sectype; +static lang_memory_region_type *region; +static bool ldgram_had_keep = false; +static char *ldgram_vers_current_lang = NULL; #define ERROR_NAME_MAX 20 static char *error_names[ERROR_NAME_MAX]; @@ -62,19 +60,54 @@ static int error_index; %} %union { bfd_vma integer; + struct big_int + { + bfd_vma integer; + char *str; + } bigint; + fill_type *fill; char *name; + const char *cname; + struct wildcard_spec wildcard; + struct wildcard_list *wildcard_list; + struct name_list *name_list; + struct flag_info_list *flag_info_list; + struct flag_info *flag_info; int token; union etree_union *etree; + struct phdr_info + { + bool filehdr; + bool 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 exp opt_exp_with_type mustbe_exp opt_at -%type fill_opt -%type memspec_opt -%token INT -%token NAME -%type length - -%right PLUSEQ MINUSEQ MULTEQ DIVEQ '=' LSHIFTEQ RSHIFTEQ ANDEQ OREQ +%type exp opt_exp_with_type mustbe_exp opt_at phdr_type phdr_val +%type opt_exp_without_type opt_subalign opt_align +%type fill_opt fill_exp +%type exclude_name_list +%type section_name_list +%type sect_flag_list +%type sect_flags +%type memspec_opt memspec_at_opt paren_script_name casesymlist +%type wildcard_name +%type section_name_spec filename_spec wildcard_maybe_exclude +%token INT +%token NAME LNAME +%type length +%type phdr_qualifiers +%type nocrossref_list +%type phdr_opt +%type opt_nocrossrefs + +%right PLUSEQ MINUSEQ MULTEQ DIVEQ '=' LSHIFTEQ RSHIFTEQ ANDEQ OREQ %right '?' ':' %left OROR %left ANDAND @@ -89,37 +122,52 @@ static int error_index; %left '*' '/' '%' %right UNARY -%token END +%token END %left '(' -%token ALIGN_K BLOCK QUAD LONG SHORT BYTE -%token SECTIONS +%token ALIGN_K BLOCK BIND QUAD SQUAD LONG SHORT BYTE +%token SECTIONS PHDRS INSERT_K AFTER BEFORE +%token DATA_SEGMENT_ALIGN DATA_SEGMENT_RELRO_END DATA_SEGMENT_END +%token SORT_BY_NAME SORT_BY_ALIGNMENT SORT_NONE +%token SORT_BY_INIT_PRIORITY %token '{' '}' %token SIZEOF_HEADERS OUTPUT_FORMAT FORCE_COMMON_ALLOCATION OUTPUT_ARCH -%token SIZEOF_HEADERS +%token INHIBIT_COMMON_ALLOCATION FORCE_GROUP_ALLOCATION +%token SEGMENT_START %token INCLUDE -%token MEMORY DEFSYMEND +%token MEMORY +%token REGION_ALIAS +%token LD_FEATURE %token NOLOAD DSECT COPY INFO OVERLAY -%token NAME DEFINED TARGET_K SEARCH_DIR MAP ENTRY -%token SIZEOF NEXT ADDR -%token STARTUP HLL SYSLIB FLOAT NOFLOAT +%token READONLY +%token DEFINED TARGET_K SEARCH_DIR MAP ENTRY +%token NEXT +%token SIZEOF ALIGNOF ADDR LOADADDR MAX_K MIN_K +%token STARTUP HLL SYSLIB FLOAT NOFLOAT NOCROSSREFS NOCROSSREFS_TO %token ORIGIN FILL -%token LENGTH CREATE_OBJECT_SYMBOLS INPUT OUTPUT CONSTRUCTORS -%token ALIGNMOD AT -%type assign_op +%token LENGTH CREATE_OBJECT_SYMBOLS INPUT GROUP OUTPUT CONSTRUCTORS +%token ALIGNMOD AT SUBALIGN HIDDEN PROVIDE PROVIDE_HIDDEN AS_NEEDED +%type assign_op atype attributes_opt sect_constraint opt_align_with_input %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 +%token CHIP LIST SECT ABSOLUTE LOAD NEWLINE ENDWORD ORDER NAMEWORD ASSERT_K +%token LOG2CEIL FORMAT PUBLIC DEFSYMEND BASE ALIAS TRUNCATE REL +%token INPUT_SCRIPT INPUT_MRI_SCRIPT INPUT_DEFSYM CASE EXTERN START +%token VERS_TAG VERS_IDENTIFIER +%token GLOBAL LOCAL VERSIONK INPUT_VERSION_SCRIPT +%token KEEP ONLY_IF_RO ONLY_IF_RW SPECIAL INPUT_SECTION_FLAGS ALIGN_WITH_INPUT +%token EXCLUDE_FILE +%token CONSTANT +%type vers_defns +%type vers_tag +%type verdep +%token INPUT_DYNAMIC_LIST -%{ -/* For byacc, this has to come after INPUT_SCRIPT et al. are defined. */ -#include "ldlex.h" -%} %% -file: +file: INPUT_SCRIPT script_file | INPUT_MRI_SCRIPT mri_script_file + | INPUT_VERSION_SCRIPT version_script_file + | INPUT_DYNAMIC_LIST dynamic_list_file | INPUT_DEFSYM defsym_expr ; @@ -128,50 +176,50 @@ filename: NAME; defsym_expr: - { ldlex_defsym(); } - NAME '=' exp - { - ldlex_popstate(); - lang_add_assignment(exp_assop($3,$2,$4)); - } + { ldlex_expression(); } + assignment + { ldlex_popstate(); } + ; -/* SYNTAX WITHIN AN MRI SCRIPT FILE */ +/* 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 (); } ; mri_script_lines: mri_script_lines mri_script_command NEWLINE - | + | ; mri_script_command: - CHIP exp + CHIP exp | CHIP exp ',' exp - | NAME { - einfo("%P%F: unrecognised keyword in MRI style script '%s'\n",$1); + | NAME { + einfo(_("%F%P: unrecognised keyword in MRI style script '%s'\n"),$1); } - | LIST { - write_map = true; + | 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 + | 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 + | SECT NAME ',' exp { mri_output_section($2, $4);} | SECT NAME exp { mri_output_section($2, $3);} @@ -179,27 +227,38 @@ mri_script_command: { 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); } + | 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_alias ($2, 0, (int) $4.integer); } + | BASE exp { mri_base($2); } - | TRUNCATE INT - { mri_truncate((unsigned int) $2); } - | + | TRUNCATE INT + { mri_truncate ((unsigned int) $2.integer); } + | 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); } - | + ordernamelist ',' NAME { mri_order($3); } + | ordernamelist NAME { mri_order($2); } + | ; mri_load_name_list: @@ -209,68 +268,138 @@ mri_load_name_list: ; mri_abs_name_list: - NAME - { mri_only_load($1); } + NAME + { mri_only_load($1); } | mri_abs_name_list ',' NAME - { mri_only_load($3); } + { mri_only_load($3); } ; -script_file: - { - ldlex_both(); - } - ifile_list - { - ldlex_popstate(); - } - ; +casesymlist: + /* empty */ { $$ = NULL; } + | NAME + | casesymlist ',' NAME + ; +extern_name_list: + NAME + { ldlang_add_undef ($1, false); } + | extern_name_list NAME + { ldlang_add_undef ($2, false); } + | extern_name_list ',' NAME + { ldlang_add_undef ($3, false); } + ; -ifile_list: - ifile_list ifile_p1 - | +script_file: + { ldlex_script (); } + ifile_list + { ldlex_popstate (); } ; +ifile_list: + ifile_list ifile_p1 + | + ; 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); } | SEARCH_DIR '(' filename ')' - { ldfile_add_library_path($3); } + { 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); } + | 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, bfd_arch_unknown); } | FORCE_COMMON_ALLOCATION { command_line.force_common_definition = true ; } + | FORCE_GROUP_ALLOCATION + { command_line.force_group_allocation = true ; } + | INHIBIT_COMMON_ALLOCATION + { link_info.inhibit_common_definition = true ; } | INPUT '(' input_list ')' - | MAP '(' filename ')' + | 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 + | INCLUDE filename + { ldfile_open_command_file ($2); } + ifile_list END + | NOCROSSREFS '(' nocrossref_list ')' + { + lang_add_nocrossref ($3); + } + | NOCROSSREFS_TO '(' nocrossref_list ')' + { + lang_add_nocrossref_to ($3); + } + | EXTERN '(' { ldlex_expression (); } extern_name_list ')' + { ldlex_popstate (); } + | INSERT_K AFTER NAME + { lang_add_insert ($3, 0); } + | INSERT_K BEFORE NAME + { lang_add_insert ($3, 1); } + | REGION_ALIAS '(' NAME ',' NAME ')' + { lang_memory_region_alias ($3, $5); } + | LD_FEATURE '(' NAME ')' + { lang_ld_feature ($3); } ; input_list: + { ldlex_inputlist(); } + input_list1 + { ldlex_popstate(); } + +input_list1: NAME { lang_add_input_file($1,lang_input_file_is_search_file_enum, (char *)NULL); } - | input_list ',' NAME + | input_list1 ',' NAME { lang_add_input_file($3,lang_input_file_is_search_file_enum, (char *)NULL); } - | input_list NAME + | input_list1 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_list1 ',' LNAME + { lang_add_input_file($3,lang_input_file_is_l_enum, + (char *)NULL); } + | input_list1 LNAME + { lang_add_input_file($2,lang_input_file_is_l_enum, + (char *)NULL); } + | AS_NEEDED '(' + { $$ = input_flags.add_DT_NEEDED_for_regular; + input_flags.add_DT_NEEDED_for_regular = true; } + input_list1 ')' + { input_flags.add_DT_NEEDED_for_regular = $3; } + | input_list1 ',' AS_NEEDED '(' + { $$ = input_flags.add_DT_NEEDED_for_regular; + input_flags.add_DT_NEEDED_for_regular = true; } + input_list1 ')' + { input_flags.add_DT_NEEDED_for_regular = $5; } + | input_list1 AS_NEEDED '(' + { $$ = input_flags.add_DT_NEEDED_for_regular; + input_flags.add_DT_NEEDED_for_regular = true; } + input_list1 ')' + { input_flags.add_DT_NEEDED_for_regular = $4; } ; sections: @@ -285,73 +414,282 @@ sec_or_group_p1: statement_anywhere: ENTRY '(' NAME ')' - { lang_add_entry($3); } - | assignment end + { lang_add_entry ($3, false); } + | assignment separator + | ASSERT_K {ldlex_expression ();} '(' exp ',' NAME ')' + { ldlex_popstate (); + lang_add_assignment (exp_assert ($4, $6)); } ; -file_NAME_list: +wildcard_name: NAME - { lang_add_wild($1, current_file); } - | file_NAME_list opt_comma NAME - { lang_add_wild($3, current_file); } + { + $$ = $1; + } ; -input_section_spec: +wildcard_maybe_exclude: + wildcard_name + { + $$.name = $1; + $$.sorted = none; + $$.exclude_name_list = NULL; + $$.section_flag_list = NULL; + } + | EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name + { + $$.name = $5; + $$.sorted = none; + $$.exclude_name_list = $3; + $$.section_flag_list = NULL; + } + ; + +filename_spec: + wildcard_maybe_exclude + | SORT_BY_NAME '(' wildcard_maybe_exclude ')' + { + $$ = $3; + $$.sorted = by_name; + } + | SORT_NONE '(' wildcard_maybe_exclude ')' + { + $$ = $3; + $$.sorted = by_none; + } + ; + +section_name_spec: + wildcard_maybe_exclude + | SORT_BY_NAME '(' wildcard_maybe_exclude ')' + { + $$ = $3; + $$.sorted = by_name; + } + | SORT_BY_ALIGNMENT '(' wildcard_maybe_exclude ')' + { + $$ = $3; + $$.sorted = by_alignment; + } + | SORT_NONE '(' wildcard_maybe_exclude ')' + { + $$ = $3; + $$.sorted = by_none; + } + | SORT_BY_NAME '(' SORT_BY_ALIGNMENT '(' wildcard_maybe_exclude ')' ')' + { + $$ = $5; + $$.sorted = by_name_alignment; + } + | SORT_BY_NAME '(' SORT_BY_NAME '(' wildcard_maybe_exclude ')' ')' + { + $$ = $5; + $$.sorted = by_name; + } + | SORT_BY_ALIGNMENT '(' SORT_BY_NAME '(' wildcard_maybe_exclude ')' ')' + { + $$ = $5; + $$.sorted = by_alignment_name; + } + | SORT_BY_ALIGNMENT '(' SORT_BY_ALIGNMENT '(' wildcard_maybe_exclude ')' ')' + { + $$ = $5; + $$.sorted = by_alignment; + } + | SORT_BY_INIT_PRIORITY '(' wildcard_maybe_exclude ')' + { + $$ = $3; + $$.sorted = by_init_priority; + } + ; + +sect_flag_list: NAME + { + struct flag_info_list *n; + n = ((struct flag_info_list *) xmalloc (sizeof *n)); + if ($1[0] == '!') + { + n->with = without_flags; + n->name = &$1[1]; + } + else + { + n->with = with_flags; + n->name = $1; + } + n->valid = false; + n->next = NULL; + $$ = n; + } + | sect_flag_list '&' NAME + { + struct flag_info_list *n; + n = ((struct flag_info_list *) xmalloc (sizeof *n)); + if ($3[0] == '!') + { + n->with = without_flags; + n->name = &$3[1]; + } + else + { + n->with = with_flags; + n->name = $3; + } + n->valid = false; + n->next = $1; + $$ = n; + } + ; + +sect_flags: + INPUT_SECTION_FLAGS '(' sect_flag_list ')' + { + struct flag_info *n; + n = ((struct flag_info *) xmalloc (sizeof *n)); + n->flag_list = $3; + n->flags_initialized = false; + n->not_with_flags = 0; + n->only_with_flags = 0; + $$ = n; + } + ; + +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; + } + ; + +section_name_list: + section_name_list opt_comma section_name_spec + { + struct wildcard_list *tmp; + tmp = (struct wildcard_list *) xmalloc (sizeof *tmp); + tmp->next = $1; + tmp->spec = $3; + $$ = tmp; + } + | + section_name_spec + { + struct wildcard_list *tmp; + tmp = (struct wildcard_list *) xmalloc (sizeof *tmp); + tmp->next = NULL; + tmp->spec = $1; + $$ = tmp; + } + ; + +input_section_spec_no_keep: NAME - { - lang_add_wild((char *)NULL, $1); - } - | '[' { - current_file = (char *)NULL; + struct wildcard_spec tmp; + tmp.name = $1; + tmp.exclude_name_list = NULL; + tmp.sorted = none; + tmp.section_flag_list = NULL; + lang_add_wild (&tmp, NULL, ldgram_had_keep); } - file_NAME_list - ']' - | NAME + | sect_flags NAME + { + struct wildcard_spec tmp; + tmp.name = $2; + tmp.exclude_name_list = NULL; + tmp.sorted = none; + tmp.section_flag_list = $1; + lang_add_wild (&tmp, NULL, ldgram_had_keep); + } + | '[' section_name_list ']' + { + lang_add_wild (NULL, $2, ldgram_had_keep); + } + | sect_flags '[' section_name_list ']' { - current_file =$1; + struct wildcard_spec tmp; + tmp.name = NULL; + tmp.exclude_name_list = NULL; + tmp.sorted = none; + tmp.section_flag_list = $1; + lang_add_wild (&tmp, $3, ldgram_had_keep); } - '(' file_NAME_list ')' - | '*' + | filename_spec '(' section_name_list ')' { - current_file = (char *)NULL; + lang_add_wild (&$1, $3, ldgram_had_keep); } - '(' file_NAME_list ')' + | sect_flags filename_spec '(' section_name_list ')' + { + $2.section_flag_list = $1; + lang_add_wild (&$2, $4, ldgram_had_keep); + } + ; + +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 + ';' + | assignment separator + | CREATE_OBJECT_SYMBOLS { - lang_add_attribute(lang_object_symbols_statement_enum); - } - | ';' - | CONSTRUCTORS + lang_add_attribute (lang_object_symbols_statement_enum); + } + | CONSTRUCTORS + { + lang_add_attribute (lang_constructors_statement_enum); + } + | SORT_BY_NAME '(' CONSTRUCTORS ')' { - - lang_add_attribute(lang_constructors_statement_enum); + constructors_sorted = true; + 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)); - } + | length '(' mustbe_exp ')' + { + lang_add_data ((int) $1, $3); + } + + | FILL '(' fill_exp ')' + { + lang_add_fill ($3); + } + | ASSERT_K + { ldlex_expression (); } + '(' exp ',' NAME ')' separator + { + ldlex_popstate (); + lang_add_assignment (exp_assert ($4, $6)); + } + | INCLUDE filename + { + ldfile_open_command_file ($2); + } + statement_list_opt END ; statement_list: statement_list statement - | statement + | statement ; - + statement_list_opt: /* empty */ | statement_list @@ -360,62 +698,78 @@ statement_list_opt: length: QUAD { $$ = $1; } + | SQUAD + { $$ = $1; } | LONG { $$ = $1; } - | SHORT + | SHORT { $$ = $1; } | BYTE { $$ = $1; } ; -fill_opt: - '=' mustbe_exp +fill_exp: + mustbe_exp { - $$ = exp_get_value_int($2, - 0, - "fill value", - lang_first_phase_enum); + $$ = exp_get_fill ($1, 0, "fill value"); } - | { $$ = 0; } ; - +fill_opt: + '=' fill_exp + { $$ = $2; } + | { $$ = (fill_type *) 0; } + ; assign_op: PLUSEQ { $$ = '+'; } | MINUSEQ { $$ = '-'; } - | MULTEQ + | MULTEQ { $$ = '*'; } - | DIVEQ + | DIVEQ { $$ = '/'; } - | LSHIFTEQ + | LSHIFTEQ { $$ = LSHIFT; } - | RSHIFTEQ + | RSHIFTEQ { $$ = RSHIFT; } - | ANDEQ + | ANDEQ { $$ = '&'; } - | OREQ + | OREQ { $$ = '|'; } ; -end: ';' | ',' +separator: ';' | ',' ; assignment: NAME '=' mustbe_exp { - lang_add_assignment(exp_assop($2,$1,$3)); + lang_add_assignment (exp_assign ($1, $3, false)); } | NAME assign_op mustbe_exp { - -lang_add_assignment(exp_assop('=',$1,exp_binop($2,exp_nameop(NAME,$1),$3))); + lang_add_assignment (exp_assign ($1, + exp_binop ($2, + exp_nameop (NAME, + $1), + $3), false)); + } + | HIDDEN '(' NAME '=' mustbe_exp ')' + { + lang_add_assignment (exp_assign ($3, $5, true)); + } + | PROVIDE '(' NAME '=' mustbe_exp ')' + { + lang_add_assignment (exp_provide ($3, $5, false)); + } + | PROVIDE_HIDDEN '(' NAME '=' mustbe_exp ')' + { + lang_add_assignment (exp_provide ($3, $5, true)); } - ; @@ -424,43 +778,62 @@ opt_comma: memory: - MEMORY '{' memory_spec memory_spec_list '}' + MEMORY '{' memory_spec_list_opt '}' ; +memory_spec_list_opt: memory_spec_list | ; + memory_spec_list: - memory_spec_list memory_spec - | memory_spec_list ',' memory_spec - | + memory_spec_list opt_comma memory_spec + | memory_spec ; -memory_spec: NAME - { region = lang_memory_region_lookup($1); } +memory_spec: NAME + { region = lang_memory_region_lookup ($1, true); } attributes_opt ':' origin_spec opt_comma length_spec + {} + | INCLUDE filename + { ldfile_open_command_file ($2); } + memory_spec_list_opt END + ; - ; origin_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); + { + region->origin_exp = $3; } - + ; + +length_spec: + LENGTH '=' mustbe_exp + { + if (yychar == NAME) + { + yyclearin; + ldlex_backup (); + } + region->length_exp = $3; + } + ; 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: @@ -479,12 +852,13 @@ high_level_library_NAME_list: { 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: low_level_library_NAME_list opt_comma filename { ldemul_syslib($3); } | @@ -496,136 +870,639 @@ floating_point_support: | NOFLOAT { lang_float(false); } ; - -mustbe_exp: { ldlex_expression(); } +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; + $$ = n; + } + ; + +paren_script_name: { ldlex_script (); } + '(' NAME ')' + { ldlex_popstate (); $$ = $3; } + +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 - { $$ = exp_binop(LE , $1, $3); } - | exp GE exp - { $$ = exp_binop(GE , $1, $3); } + { $$ = exp_binop (LE , $1, $3); } + | exp GE exp + { $$ = 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 - { $$ = exp_intop($1); } - | SIZEOF_HEADERS - { $$ = exp_nameop(SIZEOF_HEADERS,0); } - - | SIZEOF '(' NAME ')' - { $$ = exp_nameop(SIZEOF,$3); } - | ADDR '(' NAME ')' - { $$ = exp_nameop(ADDR,$3); } + { $$ = exp_bigintop ($1.integer, $1.str); } + | SIZEOF_HEADERS + { $$ = exp_nameop (SIZEOF_HEADERS,0); } + + | ALIGNOF paren_script_name + { $$ = exp_nameop (ALIGNOF, $2); } + | SIZEOF paren_script_name + { $$ = exp_nameop (SIZEOF, $2); } + | ADDR paren_script_name + { $$ = exp_nameop (ADDR, $2); } + | LOADADDR paren_script_name + { $$ = exp_nameop (LOADADDR, $2); } + | CONSTANT '(' NAME ')' + { $$ = exp_nameop (CONSTANT,$3); } | ABSOLUTE '(' exp ')' - { $$ = 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 ')' + { $$ = exp_unop (DATA_SEGMENT_END, $3); } + | SEGMENT_START { ldlex_script (); } '(' NAME + { ldlex_popstate (); } ',' exp ')' + { /* The operands to the expression node are + placed in the opposite order from the way + in which they appear in the script as + that allows us to reuse more code in + fold_binary. */ + $$ = exp_binop (SEGMENT_START, + $7, + exp_nameop (NAME, $4)); } + | BLOCK '(' exp ')' + { $$ = exp_unop (ALIGN_K,$3); } | NAME - { $$ = 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 paren_script_name + { $$ = exp_nameop (ORIGIN, $2); } + | LENGTH paren_script_name + { $$ = exp_nameop (LENGTH, $2); } + | LOG2CEIL '(' exp ')' + { $$ = exp_unop (LOG2CEIL, $3); } ; +memspec_at_opt: + AT '>' NAME { $$ = $3; } + | { $$ = 0; } + ; + opt_at: AT '(' exp ')' { $$ = $3; } | { $$ = 0; } ; -section: NAME { ldlex_expression(); } - opt_exp_with_type - opt_at { ldlex_popstate(); } +opt_align: + ALIGN_K '(' exp ')' { $$ = $3; } + | { $$ = 0; } + ; + +opt_align_with_input: + ALIGN_WITH_INPUT { $$ = ALIGN_WITH_INPUT; } + | { $$ = 0; } + ; + +opt_subalign: + SUBALIGN '(' exp ')' { $$ = $3; } + | { $$ = 0; } + ; + +sect_constraint: + ONLY_IF_RO { $$ = ONLY_IF_RO; } + | ONLY_IF_RW { $$ = ONLY_IF_RW; } + | SPECIAL { $$ = SPECIAL; } + | { $$ = 0; } + ; + +section: NAME + { ldlex_expression(); } + opt_exp_with_type + opt_at + opt_align + opt_align_with_input + opt_subalign + sect_constraint + { + ldlex_popstate (); + ldlex_wild (); + lang_enter_output_section_statement($1, $3, sectype, + $5, $7, $4, + $8, $6); + } '{' + statement_list_opt + '}' + { ldlex_popstate (); } + memspec_opt memspec_at_opt phdr_opt fill_opt { - lang_enter_output_section_statement($1,$3,typebits,0,0,0,$4); + /* fill_opt may have switched the lexer into + expression state, and back again, but in + order to find the end of the fill + expression the parser must look ahead one + token. If it is a NAME, throw it away as + it will have been lexed in the wrong + state. */ + if (yychar == NAME) + { + yyclearin; + ldlex_backup (); + } + lang_leave_output_section_statement ($17, $14, + $16, $15); } - statement_list_opt - '}' {ldlex_expression();} fill_opt memspec_opt - { - ldlex_popstate(); - lang_leave_output_section_statement($11, $12); - } -opt_comma - + opt_comma + | OVERLAY + { ldlex_expression (); } + opt_exp_without_type opt_nocrossrefs opt_at opt_subalign + { ldlex_popstate (); } + '{' + { + lang_enter_overlay ($3, $6); + } + overlay_section + '}' + memspec_opt memspec_at_opt phdr_opt fill_opt + { + if (yychar == NAME) + { + yyclearin; + ldlex_backup (); + } + lang_leave_overlay ($5, (int) $4, + $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_assign (".", $3, false)); + } + '{' sec_or_group_p1 '}' + | INCLUDE filename + { + ldfile_open_command_file ($2); + } + sec_or_group_p1 END ; 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 = noalloc_section; } + | COPY { sectype = noalloc_section; } + | INFO { sectype = noalloc_section; } + | OVERLAY { sectype = noalloc_section; } + | READONLY { sectype = readonly_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 + { $$ = 1; } ; memspec_opt: '>' NAME { $$ = $2; } - | { $$ = "*default*"; } + | { $$ = DEFAULT_MEMORY_REGION; } + ; + +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_wild (); + lang_enter_overlay_section ($2); + } + '{' + statement_list_opt + '}' + { ldlex_popstate (); } + phdr_opt fill_opt + { + if (yychar == NAME) + { + yyclearin; + ldlex_backup (); + } + 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 + { + $$ = $1; + + if ($1->type.node_class == etree_name + && $1->type.node_code == NAME) + { + const char *s; + unsigned int i; + static const char * const phdr_types[] = + { + "PT_NULL", "PT_LOAD", "PT_DYNAMIC", + "PT_INTERP", "PT_NOTE", "PT_SHLIB", + "PT_PHDR", "PT_TLS" + }; + + s = $1->name.name; + for (i = 0; + i < sizeof phdr_types / sizeof phdr_types[0]; + i++) + if (strcmp (s, phdr_types[i]) == 0) + { + $$ = exp_intop (i); + break; + } + 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 if (strcmp (s, "PT_GNU_RELRO") == 0) + $$ = exp_intop (0x6474e552); + else if (strcmp (s, "PT_GNU_PROPERTY") == 0) + $$ = exp_intop (0x6474e553); + else + { + einfo (_("\ +%X%P:%pS: unknown phdr type `%s' (try integer literal)\n"), + NULL, s); + $$ = exp_intop (0); + } + } + } + } + ; + +phdr_qualifiers: + /* empty */ + { + memset (&$$, 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:%pS: PHDRS syntax error at `%s'\n"), + NULL, $1); + } + | AT '(' exp ')' phdr_qualifiers + { + $$ = $5; + $$.at = $3; + } + ; + +phdr_val: + /* empty */ + { + $$ = NULL; + } + | '(' exp ')' + { + $$ = $2; + } + ; + +dynamic_list_file: + { + ldlex_version_file (); + PUSH_ERROR (_("dynamic list")); + } + dynamic_list_nodes + { + ldlex_popstate (); + POP_ERROR (); + } ; + +dynamic_list_nodes: + dynamic_list_node + | dynamic_list_nodes dynamic_list_node + ; + +dynamic_list_node: + '{' dynamic_list_tag '}' ';' + ; + +dynamic_list_tag: + vers_defns ';' + { + lang_append_dynamic_list (current_dynamic_list_p, $1); + } + ; + +/* 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 '}' ';' + { + lang_register_vers_node (NULL, $2, NULL); + } + | 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_pattern (NULL, $1, ldgram_vers_current_lang, false); + } + | NAME + { + $$ = lang_new_vers_pattern (NULL, $1, ldgram_vers_current_lang, true); + } + | vers_defns ';' VERS_IDENTIFIER + { + $$ = lang_new_vers_pattern ($1, $3, ldgram_vers_current_lang, false); + } + | vers_defns ';' NAME + { + $$ = lang_new_vers_pattern ($1, $3, ldgram_vers_current_lang, true); + } + | vers_defns ';' EXTERN NAME '{' + { + $$ = ldgram_vers_current_lang; + ldgram_vers_current_lang = $4; + } + vers_defns opt_semicolon '}' + { + struct bfd_elf_version_expr *pat; + for (pat = $7; pat->next != NULL; pat = pat->next); + pat->next = $1; + $$ = $7; + ldgram_vers_current_lang = $6; + } + | EXTERN NAME '{' + { + $$ = ldgram_vers_current_lang; + ldgram_vers_current_lang = $2; + } + vers_defns opt_semicolon '}' + { + $$ = $5; + ldgram_vers_current_lang = $4; + } + | GLOBAL + { + $$ = lang_new_vers_pattern (NULL, "global", ldgram_vers_current_lang, false); + } + | vers_defns ';' GLOBAL + { + $$ = lang_new_vers_pattern ($1, "global", ldgram_vers_current_lang, false); + } + | LOCAL + { + $$ = lang_new_vers_pattern (NULL, "local", ldgram_vers_current_lang, false); + } + | vers_defns ';' LOCAL + { + $$ = lang_new_vers_pattern ($1, "local", ldgram_vers_current_lang, false); + } + | EXTERN + { + $$ = lang_new_vers_pattern (NULL, "extern", ldgram_vers_current_lang, false); + } + | vers_defns ';' EXTERN + { + $$ = lang_new_vers_pattern ($1, "extern", ldgram_vers_current_lang, false); + } + ; + +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"), + ldlex_filename ()); if (error_index > 0 && error_index < ERROR_NAME_MAX) - einfo("%P%F: %S %s in %s\n", arg, error_names[error_index-1]); + einfo ("%F%P:%pS: %s in %s\n", NULL, arg, error_names[error_index - 1]); else - einfo("%P%F: %S %s\n", arg); + einfo ("%F%P:%pS: %s\n", NULL, arg); }