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Diffstat (limited to 'ld/ldgram.y')
| -rw-r--r-- | ld/ldgram.y | 1094 |
1 files changed, 0 insertions, 1094 deletions
diff --git a/ld/ldgram.y b/ld/ldgram.y deleted file mode 100644 index a1f3ed60c22..00000000000 --- a/ld/ldgram.y +++ /dev/null @@ -1,1094 +0,0 @@ -/* A YACC grammer to parse a superset of the AT&T linker scripting languaue. - Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 1998 - 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 "ldctor.h" -#include "ldlex.h" - -#ifndef YYDEBUG -#define YYDEBUG 1 -#endif - -static enum section_type sectype; - -lang_memory_region_type *region; - -struct wildcard_spec 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; -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; - char *name; - const char *cname; - struct wildcard_spec wildcard; - int token; - union etree_union *etree; - struct phdr_info - { - boolean filehdr; - 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 <etree> exp opt_exp_with_type mustbe_exp opt_at phdr_type phdr_val -%type <etree> opt_exp_without_type -%type <integer> fill_opt -%type <name> memspec_opt casesymlist -%type <cname> wildcard_name -%type <wildcard> wildcard_spec -%token <integer> INT -%token <name> NAME LNAME -%type <integer> length -%type <phdr> phdr_qualifiers -%type <nocrossref> nocrossref_list -%type <section_phdr> phdr_opt -%type <integer> opt_nocrossrefs - -%right <token> PLUSEQ MINUSEQ MULTEQ DIVEQ '=' LSHIFTEQ RSHIFTEQ ANDEQ OREQ -%right <token> '?' ':' -%left <token> OROR -%left <token> ANDAND -%left <token> '|' -%left <token> '^' -%left <token> '&' -%left <token> EQ NE -%left <token> '<' '>' LE GE -%left <token> LSHIFT RSHIFT - -%left <token> '+' '-' -%left <token> '*' '/' '%' - -%right UNARY -%token END -%left <token> '(' -%token <token> ALIGN_K BLOCK BIND QUAD SQUAD LONG SHORT BYTE -%token SECTIONS PHDRS SORT -%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 <integer> 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 PROVIDE -%type <token> assign_op atype -%type <name> 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 <name> VERS_TAG VERS_IDENTIFIER -%token GLOBAL LOCAL VERSIONK INPUT_VERSION_SCRIPT -%token KEEP -%token EXCLUDE_FILE -%type <versyms> vers_defns -%type <versnode> vers_tag -%type <deflist> 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);} - | 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 ($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); } - | 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 - | 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); } - ; - -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 - ; - -/* 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 = false; - $$.exclude_name = NULL; - } - | EXCLUDE_FILE '(' wildcard_name ')' wildcard_name - { - $$.name = $5; - $$.sorted = false; - $$.exclude_name = $3; - } - | SORT '(' wildcard_name ')' - { - $$.name = $3; - $$.sorted = true; - $$.exclude_name = NULL; - } - | SORT '(' EXCLUDE_FILE '(' wildcard_name ')' wildcard_name ')' - { - $$.name = $7; - $$.sorted = true; - $$.exclude_name = $5; - } - ; - - -file_NAME_list: - wildcard_spec - { - lang_add_wild ($1.name, $1.sorted, - current_file.name, - current_file.sorted, - ldgram_had_keep, $1.exclude_name); - } - | file_NAME_list opt_comma wildcard_spec - { - lang_add_wild ($3.name, $3.sorted, - current_file.name, - current_file.sorted, - ldgram_had_keep, $3.exclude_name); - } - ; - -input_section_spec_no_keep: - NAME - { - lang_add_wild (NULL, false, $1, false, - ldgram_had_keep, NULL); - } - | '[' - { - current_file.name = NULL; - current_file.sorted = false; - } - file_NAME_list ']' - | wildcard_spec - { - current_file = $1; - /* '*' matches any file name. */ - if (strcmp (current_file.name, "*") == 0) - current_file.name = NULL; - } - '(' file_NAME_list ')' - ; - -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 '(' CONSTRUCTORS ')' - { - constructors_sorted = true; - lang_add_attribute (lang_constructors_statement_enum); - } - | input_section_spec - | length '(' mustbe_exp ')' - { - lang_add_data((int) $1,$3); - } - - | FILL '(' mustbe_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 - { $$ = $1; } - | SQUAD - { $$ = $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 - { $$ = '|'; } - - ; - -end: ';' | ',' - ; - - -assignment: - NAME '=' mustbe_exp - { - lang_add_assignment (exp_assop ($2, $1, $3)); - } - | NAME assign_op mustbe_exp - { - lang_add_assignment (exp_assop ('=', $1, - exp_binop ($2, - exp_nameop (NAME, - $1), - $3))); - } - | PROVIDE '(' NAME '=' mustbe_exp ')' - { - lang_add_assignment (exp_provide ($3, $5)); - } - ; - - -opt_comma: - ',' | ; - - -memory: - MEMORY '{' memory_spec memory_spec_list '}' - ; - -memory_spec_list: - memory_spec_list memory_spec - | memory_spec_list ',' memory_spec - | - ; - - -memory_spec: NAME - { region = lang_memory_region_lookup($1); } - attributes_opt ':' - origin_spec opt_comma length_spec - - ; origin_spec: - ORIGIN '=' mustbe_exp - { region->current = - region->origin = - exp_get_vma($3, 0L,"origin", lang_first_phase_enum); -} - ; - -length_spec: - LENGTH '=' mustbe_exp - { region->length = exp_get_vma($3, - ~((bfd_vma)0), - "length", - lang_first_phase_enum); - } - - -attributes_opt: - '(' NAME ')' - { - lang_set_flags(region, $2); - } - | - - ; - -startup: - STARTUP '(' filename ')' - { lang_startup($3); } - ; - -high_level_library: - HLL '(' high_level_library_NAME_list ')' - | HLL '(' ')' - { ldemul_hll((char *)NULL); } - ; - -high_level_library_NAME_list: - high_level_library_NAME_list opt_comma filename - { ldemul_hll($3); } - | filename - { ldemul_hll($1); } - - ; - -low_level_library: - SYSLIB '(' low_level_library_NAME_list ')' - ; low_level_library_NAME_list: - low_level_library_NAME_list opt_comma filename - { ldemul_syslib($3); } - | - ; - -floating_point_support: - FLOAT - { lang_float(true); } - | NOFLOAT - { lang_float(false); } - ; - -nocrossref_list: - /* empty */ - { - $$ = 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_intop($1); } - | 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); } - | 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 ')' - { $$ = exp_assert ($3, $5); } - ; - - -opt_at: - AT '(' exp ')' { $$ = $3; } - | { $$ = 0; } - ; - -section: NAME { ldlex_expression(); } - opt_exp_with_type - opt_at { ldlex_popstate (); ldlex_script (); } - '{' - { - lang_enter_output_section_statement($1, $3, - sectype, - 0, 0, 0, $4); - } - statement_list_opt - '}' { ldlex_popstate (); ldlex_expression (); } - memspec_opt phdr_opt fill_opt - { - ldlex_popstate (); - lang_leave_output_section_statement ($13, $11, $12); - } - opt_comma - | OVERLAY - { ldlex_expression (); } - opt_exp_without_type opt_nocrossrefs opt_at - { ldlex_popstate (); ldlex_script (); } - '{' - { - lang_enter_overlay ($3, $5, (int) $4); - } - overlay_section - '}' - { ldlex_popstate (); ldlex_expression (); } - memspec_opt phdr_opt fill_opt - { - ldlex_popstate (); - lang_leave_overlay ($14, $12, $13); - } - opt_comma - | /* The GROUP case is just enough to support the gcc - svr3.ifile script. It is not intended to be full - support. I'm not even sure what GROUP is supposed - to mean. */ - GROUP { ldlex_expression (); } - opt_exp_with_type - { - ldlex_popstate (); - lang_add_assignment (exp_assop ('=', ".", $3)); - } - '{' sec_or_group_p1 '}' - ; - -type: - NOLOAD { sectype = noload_section; } - | DSECT { sectype = dsect_section; } - | COPY { sectype = copy_section; } - | INFO { sectype = info_section; } - | OVERLAY { sectype = overlay_section; } - ; - -atype: - '(' type ')' - | /* EMPTY */ { sectype = normal_section; } - | '(' ')' { sectype = normal_section; } - ; - -opt_exp_with_type: - exp atype ':' { $$ = $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; } - | { $$ = "*default*"; } - ; - -phdr_opt: - /* empty */ - { - $$ = 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" - }; - - s = $1->name.name; - for (i = 0; - i < sizeof phdr_types / sizeof phdr_types[0]; - i++) - if (strcmp (s, phdr_types[i]) == 0) - { - $$ = exp_intop (i); - break; - } - } - } - ; - -phdr_qualifiers: - /* empty */ - { - memset (&$$, 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 '{' 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_regex (NULL, $1, ldgram_vers_current_lang); - } - | vers_defns ';' VERS_IDENTIFIER - { - $$ = lang_new_vers_regex ($1, $3, ldgram_vers_current_lang); - } - | EXTERN NAME '{' - { - $<name>$ = ldgram_vers_current_lang; - ldgram_vers_current_lang = $2; - } - vers_defns '}' - { - ldgram_vers_current_lang = $<name>4; - } - ; - -%% -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); -} |