2c5925d6b7
Consider structures, unions and enums defined in the source file as internal and do not expand them. This way, changes to e.g. struct serial_private in drivers/tty/serial/8250_pci.c will not affect the checksum of the pciserial_* exports.
503 lines
11 KiB
Text
503 lines
11 KiB
Text
/* C global declaration parser for genksyms.
|
|
Copyright 1996, 1997 Linux International.
|
|
|
|
New implementation contributed by Richard Henderson <rth@tamu.edu>
|
|
Based on original work by Bjorn Ekwall <bj0rn@blox.se>
|
|
|
|
This file is part of the Linux modutils.
|
|
|
|
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. */
|
|
|
|
|
|
%{
|
|
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "genksyms.h"
|
|
|
|
static int is_typedef;
|
|
static int is_extern;
|
|
static char *current_name;
|
|
static struct string_list *decl_spec;
|
|
|
|
static void yyerror(const char *);
|
|
|
|
static inline void
|
|
remove_node(struct string_list **p)
|
|
{
|
|
struct string_list *node = *p;
|
|
*p = node->next;
|
|
free_node(node);
|
|
}
|
|
|
|
static inline void
|
|
remove_list(struct string_list **pb, struct string_list **pe)
|
|
{
|
|
struct string_list *b = *pb, *e = *pe;
|
|
*pb = e;
|
|
free_list(b, e);
|
|
}
|
|
|
|
/* Record definition of a struct/union/enum */
|
|
static void record_compound(struct string_list **keyw,
|
|
struct string_list **ident,
|
|
struct string_list **body,
|
|
enum symbol_type type)
|
|
{
|
|
struct string_list *b = *body, *i = *ident, *r;
|
|
|
|
if (i->in_source_file) {
|
|
remove_node(keyw);
|
|
(*ident)->tag = type;
|
|
remove_list(body, ident);
|
|
return;
|
|
}
|
|
r = copy_node(i); r->tag = type;
|
|
r->next = (*keyw)->next; *body = r; (*keyw)->next = NULL;
|
|
add_symbol(i->string, type, b, is_extern);
|
|
}
|
|
|
|
%}
|
|
|
|
%token ASM_KEYW
|
|
%token ATTRIBUTE_KEYW
|
|
%token AUTO_KEYW
|
|
%token BOOL_KEYW
|
|
%token CHAR_KEYW
|
|
%token CONST_KEYW
|
|
%token DOUBLE_KEYW
|
|
%token ENUM_KEYW
|
|
%token EXTERN_KEYW
|
|
%token EXTENSION_KEYW
|
|
%token FLOAT_KEYW
|
|
%token INLINE_KEYW
|
|
%token INT_KEYW
|
|
%token LONG_KEYW
|
|
%token REGISTER_KEYW
|
|
%token RESTRICT_KEYW
|
|
%token SHORT_KEYW
|
|
%token SIGNED_KEYW
|
|
%token STATIC_KEYW
|
|
%token STRUCT_KEYW
|
|
%token TYPEDEF_KEYW
|
|
%token UNION_KEYW
|
|
%token UNSIGNED_KEYW
|
|
%token VOID_KEYW
|
|
%token VOLATILE_KEYW
|
|
%token TYPEOF_KEYW
|
|
|
|
%token EXPORT_SYMBOL_KEYW
|
|
|
|
%token ASM_PHRASE
|
|
%token ATTRIBUTE_PHRASE
|
|
%token BRACE_PHRASE
|
|
%token BRACKET_PHRASE
|
|
%token EXPRESSION_PHRASE
|
|
|
|
%token CHAR
|
|
%token DOTS
|
|
%token IDENT
|
|
%token INT
|
|
%token REAL
|
|
%token STRING
|
|
%token TYPE
|
|
%token OTHER
|
|
%token FILENAME
|
|
|
|
%%
|
|
|
|
declaration_seq:
|
|
declaration
|
|
| declaration_seq declaration
|
|
;
|
|
|
|
declaration:
|
|
{ is_typedef = 0; is_extern = 0; current_name = NULL; decl_spec = NULL; }
|
|
declaration1
|
|
{ free_list(*$2, NULL); *$2 = NULL; }
|
|
;
|
|
|
|
declaration1:
|
|
EXTENSION_KEYW TYPEDEF_KEYW { is_typedef = 1; } simple_declaration
|
|
{ $$ = $4; }
|
|
| TYPEDEF_KEYW { is_typedef = 1; } simple_declaration
|
|
{ $$ = $3; }
|
|
| simple_declaration
|
|
| function_definition
|
|
| asm_definition
|
|
| export_definition
|
|
| error ';' { $$ = $2; }
|
|
| error '}' { $$ = $2; }
|
|
;
|
|
|
|
simple_declaration:
|
|
decl_specifier_seq_opt init_declarator_list_opt ';'
|
|
{ if (current_name) {
|
|
struct string_list *decl = (*$3)->next;
|
|
(*$3)->next = NULL;
|
|
add_symbol(current_name,
|
|
is_typedef ? SYM_TYPEDEF : SYM_NORMAL,
|
|
decl, is_extern);
|
|
current_name = NULL;
|
|
}
|
|
$$ = $3;
|
|
}
|
|
;
|
|
|
|
init_declarator_list_opt:
|
|
/* empty */ { $$ = NULL; }
|
|
| init_declarator_list
|
|
;
|
|
|
|
init_declarator_list:
|
|
init_declarator
|
|
{ struct string_list *decl = *$1;
|
|
*$1 = NULL;
|
|
add_symbol(current_name,
|
|
is_typedef ? SYM_TYPEDEF : SYM_NORMAL, decl, is_extern);
|
|
current_name = NULL;
|
|
$$ = $1;
|
|
}
|
|
| init_declarator_list ',' init_declarator
|
|
{ struct string_list *decl = *$3;
|
|
*$3 = NULL;
|
|
free_list(*$2, NULL);
|
|
*$2 = decl_spec;
|
|
add_symbol(current_name,
|
|
is_typedef ? SYM_TYPEDEF : SYM_NORMAL, decl, is_extern);
|
|
current_name = NULL;
|
|
$$ = $3;
|
|
}
|
|
;
|
|
|
|
init_declarator:
|
|
declarator asm_phrase_opt attribute_opt initializer_opt
|
|
{ $$ = $4 ? $4 : $3 ? $3 : $2 ? $2 : $1; }
|
|
;
|
|
|
|
/* Hang on to the specifiers so that we can reuse them. */
|
|
decl_specifier_seq_opt:
|
|
/* empty */ { decl_spec = NULL; }
|
|
| decl_specifier_seq
|
|
;
|
|
|
|
decl_specifier_seq:
|
|
decl_specifier { decl_spec = *$1; }
|
|
| decl_specifier_seq decl_specifier { decl_spec = *$2; }
|
|
;
|
|
|
|
decl_specifier:
|
|
storage_class_specifier
|
|
{ /* Version 2 checksumming ignores storage class, as that
|
|
is really irrelevant to the linkage. */
|
|
remove_node($1);
|
|
$$ = $1;
|
|
}
|
|
| type_specifier
|
|
;
|
|
|
|
storage_class_specifier:
|
|
AUTO_KEYW
|
|
| REGISTER_KEYW
|
|
| STATIC_KEYW
|
|
| EXTERN_KEYW { is_extern = 1; $$ = $1; }
|
|
| INLINE_KEYW { is_extern = 0; $$ = $1; }
|
|
;
|
|
|
|
type_specifier:
|
|
simple_type_specifier
|
|
| cvar_qualifier
|
|
| TYPEOF_KEYW '(' decl_specifier_seq '*' ')'
|
|
| TYPEOF_KEYW '(' decl_specifier_seq ')'
|
|
|
|
/* References to s/u/e's defined elsewhere. Rearrange things
|
|
so that it is easier to expand the definition fully later. */
|
|
| STRUCT_KEYW IDENT
|
|
{ remove_node($1); (*$2)->tag = SYM_STRUCT; $$ = $2; }
|
|
| UNION_KEYW IDENT
|
|
{ remove_node($1); (*$2)->tag = SYM_UNION; $$ = $2; }
|
|
| ENUM_KEYW IDENT
|
|
{ remove_node($1); (*$2)->tag = SYM_ENUM; $$ = $2; }
|
|
|
|
/* Full definitions of an s/u/e. Record it. */
|
|
| STRUCT_KEYW IDENT class_body
|
|
{ record_compound($1, $2, $3, SYM_STRUCT); $$ = $3; }
|
|
| UNION_KEYW IDENT class_body
|
|
{ record_compound($1, $2, $3, SYM_UNION); $$ = $3; }
|
|
| ENUM_KEYW IDENT enum_body
|
|
{ record_compound($1, $2, $3, SYM_ENUM); $$ = $3; }
|
|
/*
|
|
* Anonymous enum definition. Tell add_symbol() to restart its counter.
|
|
*/
|
|
| ENUM_KEYW enum_body
|
|
{ add_symbol(NULL, SYM_ENUM, NULL, 0); $$ = $2; }
|
|
/* Anonymous s/u definitions. Nothing needs doing. */
|
|
| STRUCT_KEYW class_body { $$ = $2; }
|
|
| UNION_KEYW class_body { $$ = $2; }
|
|
;
|
|
|
|
simple_type_specifier:
|
|
CHAR_KEYW
|
|
| SHORT_KEYW
|
|
| INT_KEYW
|
|
| LONG_KEYW
|
|
| SIGNED_KEYW
|
|
| UNSIGNED_KEYW
|
|
| FLOAT_KEYW
|
|
| DOUBLE_KEYW
|
|
| VOID_KEYW
|
|
| BOOL_KEYW
|
|
| TYPE { (*$1)->tag = SYM_TYPEDEF; $$ = $1; }
|
|
;
|
|
|
|
ptr_operator:
|
|
'*' cvar_qualifier_seq_opt
|
|
{ $$ = $2 ? $2 : $1; }
|
|
;
|
|
|
|
cvar_qualifier_seq_opt:
|
|
/* empty */ { $$ = NULL; }
|
|
| cvar_qualifier_seq
|
|
;
|
|
|
|
cvar_qualifier_seq:
|
|
cvar_qualifier
|
|
| cvar_qualifier_seq cvar_qualifier { $$ = $2; }
|
|
;
|
|
|
|
cvar_qualifier:
|
|
CONST_KEYW | VOLATILE_KEYW | ATTRIBUTE_PHRASE
|
|
| RESTRICT_KEYW
|
|
{ /* restrict has no effect in prototypes so ignore it */
|
|
remove_node($1);
|
|
$$ = $1;
|
|
}
|
|
;
|
|
|
|
declarator:
|
|
ptr_operator declarator { $$ = $2; }
|
|
| direct_declarator
|
|
;
|
|
|
|
direct_declarator:
|
|
IDENT
|
|
{ if (current_name != NULL) {
|
|
error_with_pos("unexpected second declaration name");
|
|
YYERROR;
|
|
} else {
|
|
current_name = (*$1)->string;
|
|
$$ = $1;
|
|
}
|
|
}
|
|
| direct_declarator '(' parameter_declaration_clause ')'
|
|
{ $$ = $4; }
|
|
| direct_declarator '(' error ')'
|
|
{ $$ = $4; }
|
|
| direct_declarator BRACKET_PHRASE
|
|
{ $$ = $2; }
|
|
| '(' declarator ')'
|
|
{ $$ = $3; }
|
|
| '(' error ')'
|
|
{ $$ = $3; }
|
|
;
|
|
|
|
/* Nested declarators differ from regular declarators in that they do
|
|
not record the symbols they find in the global symbol table. */
|
|
nested_declarator:
|
|
ptr_operator nested_declarator { $$ = $2; }
|
|
| direct_nested_declarator
|
|
;
|
|
|
|
direct_nested_declarator:
|
|
IDENT
|
|
| TYPE
|
|
| direct_nested_declarator '(' parameter_declaration_clause ')'
|
|
{ $$ = $4; }
|
|
| direct_nested_declarator '(' error ')'
|
|
{ $$ = $4; }
|
|
| direct_nested_declarator BRACKET_PHRASE
|
|
{ $$ = $2; }
|
|
| '(' nested_declarator ')'
|
|
{ $$ = $3; }
|
|
| '(' error ')'
|
|
{ $$ = $3; }
|
|
;
|
|
|
|
parameter_declaration_clause:
|
|
parameter_declaration_list_opt DOTS { $$ = $2; }
|
|
| parameter_declaration_list_opt
|
|
| parameter_declaration_list ',' DOTS { $$ = $3; }
|
|
;
|
|
|
|
parameter_declaration_list_opt:
|
|
/* empty */ { $$ = NULL; }
|
|
| parameter_declaration_list
|
|
;
|
|
|
|
parameter_declaration_list:
|
|
parameter_declaration
|
|
| parameter_declaration_list ',' parameter_declaration
|
|
{ $$ = $3; }
|
|
;
|
|
|
|
parameter_declaration:
|
|
decl_specifier_seq m_abstract_declarator
|
|
{ $$ = $2 ? $2 : $1; }
|
|
;
|
|
|
|
m_abstract_declarator:
|
|
ptr_operator m_abstract_declarator
|
|
{ $$ = $2 ? $2 : $1; }
|
|
| direct_m_abstract_declarator
|
|
;
|
|
|
|
direct_m_abstract_declarator:
|
|
/* empty */ { $$ = NULL; }
|
|
| IDENT
|
|
{ /* For version 2 checksums, we don't want to remember
|
|
private parameter names. */
|
|
remove_node($1);
|
|
$$ = $1;
|
|
}
|
|
/* This wasn't really a typedef name but an identifier that
|
|
shadows one. */
|
|
| TYPE
|
|
{ remove_node($1);
|
|
$$ = $1;
|
|
}
|
|
| direct_m_abstract_declarator '(' parameter_declaration_clause ')'
|
|
{ $$ = $4; }
|
|
| direct_m_abstract_declarator '(' error ')'
|
|
{ $$ = $4; }
|
|
| direct_m_abstract_declarator BRACKET_PHRASE
|
|
{ $$ = $2; }
|
|
| '(' m_abstract_declarator ')'
|
|
{ $$ = $3; }
|
|
| '(' error ')'
|
|
{ $$ = $3; }
|
|
;
|
|
|
|
function_definition:
|
|
decl_specifier_seq_opt declarator BRACE_PHRASE
|
|
{ struct string_list *decl = *$2;
|
|
*$2 = NULL;
|
|
add_symbol(current_name, SYM_NORMAL, decl, is_extern);
|
|
$$ = $3;
|
|
}
|
|
;
|
|
|
|
initializer_opt:
|
|
/* empty */ { $$ = NULL; }
|
|
| initializer
|
|
;
|
|
|
|
/* We never care about the contents of an initializer. */
|
|
initializer:
|
|
'=' EXPRESSION_PHRASE
|
|
{ remove_list($2, &(*$1)->next); $$ = $2; }
|
|
;
|
|
|
|
class_body:
|
|
'{' member_specification_opt '}' { $$ = $3; }
|
|
| '{' error '}' { $$ = $3; }
|
|
;
|
|
|
|
member_specification_opt:
|
|
/* empty */ { $$ = NULL; }
|
|
| member_specification
|
|
;
|
|
|
|
member_specification:
|
|
member_declaration
|
|
| member_specification member_declaration { $$ = $2; }
|
|
;
|
|
|
|
member_declaration:
|
|
decl_specifier_seq_opt member_declarator_list_opt ';'
|
|
{ $$ = $3; }
|
|
| error ';'
|
|
{ $$ = $2; }
|
|
;
|
|
|
|
member_declarator_list_opt:
|
|
/* empty */ { $$ = NULL; }
|
|
| member_declarator_list
|
|
;
|
|
|
|
member_declarator_list:
|
|
member_declarator
|
|
| member_declarator_list ',' member_declarator { $$ = $3; }
|
|
;
|
|
|
|
member_declarator:
|
|
nested_declarator attribute_opt { $$ = $2 ? $2 : $1; }
|
|
| IDENT member_bitfield_declarator { $$ = $2; }
|
|
| member_bitfield_declarator
|
|
;
|
|
|
|
member_bitfield_declarator:
|
|
':' EXPRESSION_PHRASE { $$ = $2; }
|
|
;
|
|
|
|
attribute_opt:
|
|
/* empty */ { $$ = NULL; }
|
|
| attribute_opt ATTRIBUTE_PHRASE
|
|
;
|
|
|
|
enum_body:
|
|
'{' enumerator_list '}' { $$ = $3; }
|
|
| '{' enumerator_list ',' '}' { $$ = $4; }
|
|
;
|
|
|
|
enumerator_list:
|
|
enumerator
|
|
| enumerator_list ',' enumerator
|
|
|
|
enumerator:
|
|
IDENT
|
|
{
|
|
const char *name = strdup((*$1)->string);
|
|
add_symbol(name, SYM_ENUM_CONST, NULL, 0);
|
|
}
|
|
| IDENT '=' EXPRESSION_PHRASE
|
|
{
|
|
const char *name = strdup((*$1)->string);
|
|
struct string_list *expr = copy_list_range(*$3, *$2);
|
|
add_symbol(name, SYM_ENUM_CONST, expr, 0);
|
|
}
|
|
|
|
asm_definition:
|
|
ASM_PHRASE ';' { $$ = $2; }
|
|
;
|
|
|
|
asm_phrase_opt:
|
|
/* empty */ { $$ = NULL; }
|
|
| ASM_PHRASE
|
|
;
|
|
|
|
export_definition:
|
|
EXPORT_SYMBOL_KEYW '(' IDENT ')' ';'
|
|
{ export_symbol((*$3)->string); $$ = $5; }
|
|
;
|
|
|
|
|
|
%%
|
|
|
|
static void
|
|
yyerror(const char *e)
|
|
{
|
|
error_with_pos("%s", e);
|
|
}
|