/* A YACC grammar to parse a superset of the AT&T linker scripting language. Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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 "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 enum section_type sectype; static lang_memory_region_type *region; FILE *saved_script_handle = NULL; bfd_boolean force_make_executable = FALSE; bfd_boolean ldgram_in_script = FALSE; bfd_boolean ldgram_had_equals = FALSE; bfd_boolean ldgram_had_keep = FALSE; char *ldgram_vers_current_lang = NULL; #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; 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; int token; union etree_union *etree; struct phdr_info { bfd_boolean filehdr; bfd_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 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 file_NAME_list %type memspec_opt casesymlist %type memspec_at_opt %type wildcard_name %type wildcard_spec %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 %left '|' %left '^' %left '&' %left EQ NE %left '<' '>' LE GE %left LSHIFT RSHIFT %left '+' '-' %left '*' '/' '%' %right UNARY %token END %left '(' %token ALIGN_K BLOCK BIND QUAD SQUAD LONG SHORT BYTE %token SECTIONS PHDRS DATA_SEGMENT_ALIGN DATA_SEGMENT_RELRO_END DATA_SEGMENT_END %token SORT_BY_NAME SORT_BY_ALIGNMENT %token '{' '}' %token SIZEOF_HEADERS OUTPUT_FORMAT FORCE_COMMON_ALLOCATION OUTPUT_ARCH %token INHIBIT_COMMON_ALLOCATION %token SIZEOF_HEADERS %token SEGMENT_START %token INCLUDE %token MEMORY DEFSYMEND %token NOLOAD DSECT COPY INFO OVERLAY %token NAME LNAME DEFINED TARGET_K SEARCH_DIR MAP ENTRY %token 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 SUBALIGN PROVIDE PROVIDE_HIDDEN AS_NEEDED %type assign_op atype attributes_opt sect_constraint %type filename %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 VERS_TAG VERS_IDENTIFIER %token GLOBAL LOCAL VERSIONK INPUT_VERSION_SCRIPT %token KEEP ONLY_IF_RO ONLY_IF_RW SPECIAL %token EXCLUDE_FILE %type vers_defns %type vers_tag %type verdep %% file: INPUT_SCRIPT script_file | INPUT_MRI_SCRIPT mri_script_file | INPUT_VERSION_SCRIPT version_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 (); mri_draw_tree (); 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.integer); } | BASE exp { mri_base($2); } | TRUNCATE INT { mri_truncate ((unsigned int) $2.integer); } | CASE casesymlist | EXTERN extern_name_list | INCLUDE filename { ldlex_script (); ldfile_open_command_file($2); } mri_script_lines END { ldlex_popstate (); } | 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 */ { $$ = NULL; } | NAME | casesymlist ',' NAME ; extern_name_list: NAME { ldlang_add_undef ($1); } | extern_name_list NAME { ldlang_add_undef ($2); } | extern_name_list ',' NAME { ldlang_add_undef ($3); } ; script_file: { ldlex_both(); } ifile_list { ldlex_popstate(); } ; ifile_list: ifile_list ifile_p1 | ; ifile_p1: memory | sections | phdrs | startup | high_level_library | low_level_library | floating_point_support | statement_anywhere | version | ';' | TARGET_K '(' NAME ')' { lang_add_target($3); } | SEARCH_DIR '(' filename ')' { ldfile_add_library_path ($3, FALSE); } | OUTPUT '(' filename ')' { lang_add_output($3, 1); } | OUTPUT_FORMAT '(' NAME ')' { lang_add_output_format ($3, (char *) NULL, (char *) NULL, 1); } | OUTPUT_FORMAT '(' NAME ',' NAME ',' NAME ')' { lang_add_output_format ($3, $5, $7, 1); } | OUTPUT_ARCH '(' NAME ')' { ldfile_set_output_arch ($3, bfd_arch_unknown); } | FORCE_COMMON_ALLOCATION { command_line.force_common_definition = TRUE ; } | INHIBIT_COMMON_ALLOCATION { command_line.inhibit_common_definition = TRUE ; } | INPUT '(' input_list ')' | GROUP { lang_enter_group (); } '(' input_list ')' { lang_leave_group (); } | MAP '(' filename ')' { lang_add_map($3); } | INCLUDE filename { ldlex_script (); ldfile_open_command_file($2); } ifile_list END { ldlex_popstate (); } | NOCROSSREFS '(' nocrossref_list ')' { lang_add_nocrossref ($3); } | EXTERN '(' extern_name_list ')' ; input_list: NAME { lang_add_input_file($1,lang_input_file_is_search_file_enum, (char *)NULL); } | input_list ',' NAME { lang_add_input_file($3,lang_input_file_is_search_file_enum, (char *)NULL); } | input_list NAME { lang_add_input_file($2,lang_input_file_is_search_file_enum, (char *)NULL); } | LNAME { lang_add_input_file($1,lang_input_file_is_l_enum, (char *)NULL); } | input_list ',' LNAME { lang_add_input_file($3,lang_input_file_is_l_enum, (char *)NULL); } | input_list LNAME { lang_add_input_file($2,lang_input_file_is_l_enum, (char *)NULL); } | AS_NEEDED '(' { $$ = as_needed; as_needed = TRUE; } input_list ')' { as_needed = $3; } | input_list ',' AS_NEEDED '(' { $$ = as_needed; as_needed = TRUE; } input_list ')' { as_needed = $5; } | input_list AS_NEEDED '(' { $$ = as_needed; as_needed = TRUE; } input_list ')' { as_needed = $4; } ; 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 | ASSERT_K {ldlex_expression ();} '(' exp ',' NAME ')' { ldlex_popstate (); lang_add_assignment (exp_assert ($4, $6)); } ; /* The '*' and '?' cases are there because the lexer returns them as separate tokens rather than as NAME. */ wildcard_name: NAME { $$ = $1; } | '*' { $$ = "*"; } | '?' { $$ = "?"; } ; wildcard_spec: wildcard_name { $$.name = $1; $$.sorted = none; $$.exclude_name_list = NULL; } | EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name { $$.name = $5; $$.sorted = none; $$.exclude_name_list = $3; } | SORT_BY_NAME '(' wildcard_name ')' { $$.name = $3; $$.sorted = by_name; $$.exclude_name_list = NULL; } | SORT_BY_ALIGNMENT '(' wildcard_name ')' { $$.name = $3; $$.sorted = by_alignment; $$.exclude_name_list = NULL; } | SORT_BY_NAME '(' SORT_BY_ALIGNMENT '(' wildcard_name ')' ')' { $$.name = $5; $$.sorted = by_name_alignment; $$.exclude_name_list = NULL; } | SORT_BY_NAME '(' SORT_BY_NAME '(' wildcard_name ')' ')' { $$.name = $5; $$.sorted = by_name; $$.exclude_name_list = NULL; } | SORT_BY_ALIGNMENT '(' SORT_BY_NAME '(' wildcard_name ')' ')' { $$.name = $5; $$.sorted = by_alignment_name; $$.exclude_name_list = NULL; } | SORT_BY_ALIGNMENT '(' SORT_BY_ALIGNMENT '(' wildcard_name ')' ')' { $$.name = $5; $$.sorted = by_alignment; $$.exclude_name_list = NULL; } | SORT_BY_NAME '(' EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name ')' { $$.name = $7; $$.sorted = by_name; $$.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: file_NAME_list opt_comma wildcard_spec { struct wildcard_list *tmp; tmp = (struct wildcard_list *) xmalloc (sizeof *tmp); tmp->next = $1; tmp->spec = $3; $$ = tmp; } | wildcard_spec { struct wildcard_list *tmp; tmp = (struct wildcard_list *) xmalloc (sizeof *tmp); tmp->next = NULL; tmp->spec = $1; $$ = tmp; } ; input_section_spec_no_keep: NAME { struct wildcard_spec tmp; tmp.name = $1; tmp.exclude_name_list = NULL; tmp.sorted = none; lang_add_wild (&tmp, NULL, ldgram_had_keep); } | '[' file_NAME_list ']' { lang_add_wild (NULL, $2, ldgram_had_keep); } | wildcard_spec '(' file_NAME_list ')' { lang_add_wild (&$1, $3, 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 { lang_add_attribute(lang_object_symbols_statement_enum); } | ';' | CONSTRUCTORS { lang_add_attribute(lang_constructors_statement_enum); } | SORT_BY_NAME '(' CONSTRUCTORS ')' { constructors_sorted = TRUE; lang_add_attribute (lang_constructors_statement_enum); } | input_section_spec | length '(' mustbe_exp ')' { lang_add_data ((int) $1, $3); } | FILL '(' fill_exp ')' { lang_add_fill ($3); } ; statement_list: statement_list statement | statement ; statement_list_opt: /* empty */ | statement_list ; length: QUAD { $$ = $1; } | SQUAD { $$ = $1; } | LONG { $$ = $1; } | SHORT { $$ = $1; } | BYTE { $$ = $1; } ; fill_exp: mustbe_exp { $$ = exp_get_fill ($1, 0, "fill value"); } ; fill_opt: '=' fill_exp { $$ = $2; } | { $$ = (fill_type *) 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, FALSE)); } | PROVIDE_HIDDEN '(' NAME '=' mustbe_exp ')' { lang_add_assignment (exp_provide ($3, $5, TRUE)); } ; 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, TRUE); } attributes_opt ':' origin_spec opt_comma length_spec {} ; origin_spec: ORIGIN '=' mustbe_exp { region->origin = exp_get_vma ($3, 0, "origin"); region->current = region->origin; } ; length_spec: LENGTH '=' mustbe_exp { region->length = exp_get_vma ($3, -1, "length"); } ; attributes_opt: /* 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: 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); } ; 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; $$ = n; } ; mustbe_exp: { ldlex_expression (); } exp { ldlex_popstate (); $$=$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 { $$ = exp_bigintop ($1.integer, $1.str); } | SIZEOF_HEADERS { $$ = exp_nameop (SIZEOF_HEADERS,0); } | SIZEOF '(' NAME ')' { $$ = exp_nameop (SIZEOF,$3); } | ADDR '(' NAME ')' { $$ = exp_nameop (ADDR,$3); } | LOADADDR '(' NAME ')' { $$ = exp_nameop (LOADADDR,$3); } | ABSOLUTE '(' exp ')' { $$ = exp_unop (ABSOLUTE, $3); } | ALIGN_K '(' exp ')' { $$ = exp_unop (ALIGN_K,$3); } | ALIGN_K '(' exp ',' exp ')' { $$ = 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 ')' { $$ = exp_unop (DATA_SEGMENT_END, $3); } | SEGMENT_START '(' NAME ',' exp ')' { /* The operands to the expression node are placed in the opposite order from the way in which they appear in the script as that allows us to reuse more code in fold_binary. */ $$ = exp_binop (SEGMENT_START, $5, exp_nameop (NAME, $3)); } | BLOCK '(' 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 ')' { $$ = exp_assert ($3, $5); } | ORIGIN '(' NAME ')' { $$ = exp_nameop (ORIGIN, $3); } | LENGTH '(' NAME ')' { $$ = exp_nameop (LENGTH, $3); } ; memspec_at_opt: AT '>' NAME { $$ = $3; } | { $$ = 0; } ; opt_at: AT '(' exp ')' { $$ = $3; } | { $$ = 0; } ; opt_align: ALIGN_K '(' exp ')' { $$ = $3; } | { $$ = 0; } ; opt_subalign: SUBALIGN '(' exp ')' { $$ = $3; } | { $$ = 0; } ; sect_constraint: ONLY_IF_RO { $$ = ONLY_IF_RO; } | ONLY_IF_RW { $$ = ONLY_IF_RW; } | SPECIAL { $$ = SPECIAL; } | { $$ = 0; } ; section: NAME { ldlex_expression(); } opt_exp_with_type opt_at opt_align opt_subalign { ldlex_popstate (); ldlex_script (); } sect_constraint '{' { lang_enter_output_section_statement($1, $3, sectype, $5, $6, $4, $8); } statement_list_opt '}' { ldlex_popstate (); ldlex_expression (); } memspec_opt memspec_at_opt phdr_opt fill_opt { ldlex_popstate (); lang_leave_output_section_statement ($17, $14, $16, $15); } opt_comma {} | OVERLAY { ldlex_expression (); } opt_exp_without_type opt_nocrossrefs opt_at opt_subalign { ldlex_popstate (); ldlex_script (); } '{' { lang_enter_overlay ($3, $6); } overlay_section '}' { ldlex_popstate (); ldlex_expression (); } memspec_opt memspec_at_opt phdr_opt fill_opt { ldlex_popstate (); lang_leave_overlay ($5, (int) $4, $16, $13, $15, $14); } opt_comma | /* The GROUP case is just enough to support the gcc svr3.ifile script. It is not intended to be full support. I'm not even sure what GROUP is supposed to mean. */ GROUP { ldlex_expression (); } opt_exp_with_type { ldlex_popstate (); lang_add_assignment (exp_assop ('=', ".", $3)); } '{' sec_or_group_p1 '}' ; type: NOLOAD { sectype = noload_section; } | DSECT { sectype = dsect_section; } | COPY { sectype = copy_section; } | INFO { sectype = info_section; } | OVERLAY { sectype = overlay_section; } ; atype: '(' type ')' | /* EMPTY */ { sectype = normal_section; } | '(' ')' { sectype = normal_section; } ; opt_exp_with_type: exp atype ':' { $$ = $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; } | { $$ = DEFAULT_MEMORY_REGION; } ; phdr_opt: /* empty */ { $$ = 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; $$ = n; } ; overlay_section: /* empty */ | overlay_section NAME { ldlex_script (); lang_enter_overlay_section ($2); } '{' statement_list_opt '}' { ldlex_popstate (); ldlex_expression (); } phdr_opt fill_opt { ldlex_popstate (); lang_leave_overlay_section ($9, $8); } opt_comma ; phdrs: PHDRS '{' phdr_list '}' ; phdr_list: /* empty */ | phdr_list phdr ; phdr: NAME { ldlex_expression (); } phdr_type phdr_qualifiers { ldlex_popstate (); } ';' { lang_new_phdr ($1, $3, $4.filehdr, $4.phdrs, $4.at, $4.flags); } ; phdr_type: exp { $$ = $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", "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) $$ = exp_intop (0x6474e551); else if (strcmp (s, "PT_OPENBSD_RANDOMIZE") == 0) $$ = exp_intop (0x65a3dbe6); else { einfo (_("\ %X%P:%S: unknown phdr type `%s' (try integer literal)\n"), 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:%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 '}' ';' { 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) 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); }