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freebsd-dev/contrib/gcc/c-common.h
kan db7990886a Merge FreeBSD modifications into gcc 3.2.1-prerelease: 
1.2  framework for our kernel printf enhancements
  1.3  suppress prototype warning for K&R main

Approved by:	obrien
2002-09-17 04:10:25 +00:00

891 lines
33 KiB
C
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/* Definitions for c-common.c.
Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
1999, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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, or (at your option) any later
version.
GCC 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 GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
/* $FreeBSD$ */
#ifndef GCC_C_COMMON_H
#define GCC_C_COMMON_H
#include "splay-tree.h"
#include "cpplib.h"
/* Usage of TREE_LANG_FLAG_?:
0: COMPOUND_STMT_NO_SCOPE (in COMPOUND_STMT).
TREE_NEGATED_INT (in INTEGER_CST).
IDENTIFIER_MARKED (used by search routines).
SCOPE_BEGIN_P (in SCOPE_STMT)
DECL_PRETTY_FUNCTION_P (in VAR_DECL)
NEW_FOR_SCOPE_P (in FOR_STMT)
ASM_INPUT_P (in ASM_STMT)
STMT_EXPR_NO_SCOPE (in STMT_EXPR)
1: C_DECLARED_LABEL_FLAG (in LABEL_DECL)
STMT_IS_FULL_EXPR_P (in _STMT)
2: STMT_LINENO_FOR_FN_P (in _STMT)
3: SCOPE_NO_CLEANUPS_P (in SCOPE_STMT)
COMPOUND_STMT_BODY_BLOCK (in COMPOUND_STMT)
4: SCOPE_PARTIAL_P (in SCOPE_STMT)
*/
/* Reserved identifiers. This is the union of all the keywords for C,
C++, and Objective C. All the type modifiers have to be in one
block at the beginning, because they are used as mask bits. There
are 27 type modifiers; if we add many more we will have to redesign
the mask mechanism. */
enum rid
{
/* Modifiers: */
/* C, in empirical order of frequency. */
RID_STATIC = 0,
RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN,
RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE,
RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT,
/* C extensions */
RID_BOUNDED, RID_UNBOUNDED, RID_COMPLEX,
/* C++ */
RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE,
/* ObjC */
RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY,
/* C */
RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID,
RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE,
RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE,
RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO,
RID_SIZEOF,
/* C extensions */
RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG,
RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_PTRBASE,
RID_PTREXTENT, RID_PTRVALUE, RID_CHOOSE_EXPR, RID_TYPES_COMPATIBLE_P,
/* Too many ways of getting the name of a function as a string */
RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME,
/* C++ */
RID_BOOL, RID_WCHAR, RID_CLASS,
RID_PUBLIC, RID_PRIVATE, RID_PROTECTED,
RID_TEMPLATE, RID_NULL, RID_CATCH,
RID_DELETE, RID_FALSE, RID_NAMESPACE,
RID_NEW, RID_OPERATOR, RID_THIS,
RID_THROW, RID_TRUE, RID_TRY,
RID_TYPENAME, RID_TYPEID, RID_USING,
/* casts */
RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
/* alternate spellings */
RID_AND, RID_AND_EQ, RID_NOT, RID_NOT_EQ,
RID_OR, RID_OR_EQ, RID_XOR, RID_XOR_EQ,
RID_BITAND, RID_BITOR, RID_COMPL,
/* Objective C */
RID_ID, RID_AT_ENCODE, RID_AT_END,
RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS,
RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC,
RID_AT_PROTOCOL, RID_AT_SELECTOR, RID_AT_INTERFACE,
RID_AT_IMPLEMENTATION,
RID_MAX,
RID_FIRST_MODIFIER = RID_STATIC,
RID_LAST_MODIFIER = RID_ONEWAY,
RID_FIRST_AT = RID_AT_ENCODE,
RID_LAST_AT = RID_AT_IMPLEMENTATION,
RID_FIRST_PQ = RID_IN,
RID_LAST_PQ = RID_ONEWAY
};
#define OBJC_IS_AT_KEYWORD(rid) \
((unsigned int)(rid) >= (unsigned int)RID_FIRST_AT && \
(unsigned int)(rid) <= (unsigned int)RID_LAST_AT)
#define OBJC_IS_PQ_KEYWORD(rid) \
((unsigned int)(rid) >= (unsigned int)RID_FIRST_PQ && \
(unsigned int)(rid) <= (unsigned int)RID_LAST_PQ)
/* The elements of `ridpointers' are identifier nodes for the reserved
type names and storage classes. It is indexed by a RID_... value. */
extern tree *ridpointers;
/* Standard named or nameless data types of the C compiler. */
enum c_tree_index
{
CTI_WCHAR_TYPE,
CTI_SIGNED_WCHAR_TYPE,
CTI_UNSIGNED_WCHAR_TYPE,
CTI_WINT_TYPE,
CTI_C_SIZE_TYPE, /* The type used for the size_t typedef and the
result type of sizeof (an ordinary type without
TYPE_IS_SIZETYPE set, unlike the internal
sizetype). */
CTI_SIGNED_SIZE_TYPE, /* For format checking only. */
CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */
CTI_INTMAX_TYPE,
CTI_UINTMAX_TYPE,
CTI_WIDEST_INT_LIT_TYPE,
CTI_WIDEST_UINT_LIT_TYPE,
CTI_CHAR_ARRAY_TYPE,
CTI_WCHAR_ARRAY_TYPE,
CTI_INT_ARRAY_TYPE,
CTI_STRING_TYPE,
CTI_CONST_STRING_TYPE,
/* Type for boolean expressions (bool in C++, int in C). */
CTI_BOOLEAN_TYPE,
CTI_BOOLEAN_TRUE,
CTI_BOOLEAN_FALSE,
/* C99's _Bool type. */
CTI_C_BOOL_TYPE,
CTI_C_BOOL_TRUE,
CTI_C_BOOL_FALSE,
CTI_DEFAULT_FUNCTION_TYPE,
CTI_G77_INTEGER_TYPE,
CTI_G77_UINTEGER_TYPE,
CTI_G77_LONGINT_TYPE,
CTI_G77_ULONGINT_TYPE,
/* These are not types, but we have to look them up all the time. */
CTI_FUNCTION_NAME_DECL,
CTI_PRETTY_FUNCTION_NAME_DECL,
CTI_C99_FUNCTION_NAME_DECL,
CTI_SAVED_FUNCTION_NAME_DECLS,
CTI_VOID_ZERO,
CTI_MAX
};
#define C_RID_CODE(id) (((struct c_common_identifier *) (id))->node.rid_code)
/* Identifier part common to the C front ends. Inherits from
tree_identifier, despite appearances. */
struct c_common_identifier
{
struct tree_common common;
struct cpp_hashnode node;
};
#define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
#define signed_wchar_type_node c_global_trees[CTI_SIGNED_WCHAR_TYPE]
#define unsigned_wchar_type_node c_global_trees[CTI_UNSIGNED_WCHAR_TYPE]
#define wint_type_node c_global_trees[CTI_WINT_TYPE]
#define c_size_type_node c_global_trees[CTI_C_SIZE_TYPE]
#define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
#define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
#define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
#define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
#define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
#define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
#define boolean_type_node c_global_trees[CTI_BOOLEAN_TYPE]
#define boolean_true_node c_global_trees[CTI_BOOLEAN_TRUE]
#define boolean_false_node c_global_trees[CTI_BOOLEAN_FALSE]
#define c_bool_type_node c_global_trees[CTI_C_BOOL_TYPE]
#define c_bool_true_node c_global_trees[CTI_C_BOOL_TRUE]
#define c_bool_false_node c_global_trees[CTI_C_BOOL_FALSE]
#define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
#define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
#define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE]
#define string_type_node c_global_trees[CTI_STRING_TYPE]
#define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
#define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
/* g77 integer types, which which must be kept in sync with f/com.h */
#define g77_integer_type_node c_global_trees[CTI_G77_INTEGER_TYPE]
#define g77_uinteger_type_node c_global_trees[CTI_G77_UINTEGER_TYPE]
#define g77_longint_type_node c_global_trees[CTI_G77_LONGINT_TYPE]
#define g77_ulongint_type_node c_global_trees[CTI_G77_ULONGINT_TYPE]
#define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
#define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
#define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
#define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
/* A node for `((void) 0)'. */
#define void_zero_node c_global_trees[CTI_VOID_ZERO]
extern tree c_global_trees[CTI_MAX];
/* Mark which labels are explicitly declared.
These may be shadowed, and may be referenced from nested functions. */
#define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
/* Flag strings given by __FUNCTION__ and __PRETTY_FUNCTION__ for a
warning if they undergo concatenation. */
#define C_ARTIFICIAL_STRING_P(NODE) TREE_LANG_FLAG_0 (NODE)
typedef enum c_language_kind
{
clk_c, /* A dialect of C: K&R C, ANSI/ISO C89, C2000,
etc. */
clk_cplusplus, /* ANSI/ISO C++ */
clk_objective_c /* Objective C */
}
c_language_kind;
/* Information about a statement tree. */
struct stmt_tree_s {
/* The last statement added to the tree. */
tree x_last_stmt;
/* The type of the last expression statement. (This information is
needed to implement the statement-expression extension.) */
tree x_last_expr_type;
/* The last filename we recorded. */
const char *x_last_expr_filename;
/* In C++, Non-zero if we should treat statements as full
expressions. In particular, this variable is no-zero if at the
end of a statement we should destroy any temporaries created
during that statement. Similarly, if, at the end of a block, we
should destroy any local variables in this block. Normally, this
variable is non-zero, since those are the normal semantics of
C++.
However, in order to represent aggregate initialization code as
tree structure, we use statement-expressions. The statements
within the statement expression should not result in cleanups
being run until the entire enclosing statement is complete.
This flag has no effect in C. */
int stmts_are_full_exprs_p;
};
typedef struct stmt_tree_s *stmt_tree;
/* Global state pertinent to the current function. Some C dialects
extend this structure with additional fields. */
struct language_function {
/* While we are parsing the function, this contains information
about the statement-tree that we are building. */
struct stmt_tree_s x_stmt_tree;
/* The stack of SCOPE_STMTs for the current function. */
tree x_scope_stmt_stack;
};
/* When building a statement-tree, this is the last statement added to
the tree. */
#define last_tree (current_stmt_tree ()->x_last_stmt)
/* The type of the last expression-statement we have seen. */
#define last_expr_type (current_stmt_tree ()->x_last_expr_type)
/* The name of the last file we have seen. */
#define last_expr_filename (current_stmt_tree ()->x_last_expr_filename)
/* LAST_TREE contains the last statement parsed. These are chained
together through the TREE_CHAIN field, but often need to be
re-organized since the parse is performed bottom-up. This macro
makes LAST_TREE the indicated SUBSTMT of STMT. */
#define RECHAIN_STMTS(stmt, substmt) \
do { \
substmt = TREE_CHAIN (stmt); \
TREE_CHAIN (stmt) = NULL_TREE; \
last_tree = stmt; \
} while (0)
/* Language-specific hooks. */
extern int (*lang_statement_code_p) PARAMS ((enum tree_code));
extern void (*lang_expand_stmt) PARAMS ((tree));
extern void (*lang_expand_decl_stmt) PARAMS ((tree));
extern void (*lang_expand_function_end) PARAMS ((void));
/* Callback that determines if it's ok for a function to have no
noreturn attribute. */
extern int (*lang_missing_noreturn_ok_p) PARAMS ((tree));
extern stmt_tree current_stmt_tree PARAMS ((void));
extern tree *current_scope_stmt_stack PARAMS ((void));
extern void begin_stmt_tree PARAMS ((tree *));
extern tree add_stmt PARAMS ((tree));
extern void add_decl_stmt PARAMS ((tree));
extern tree add_scope_stmt PARAMS ((int, int));
extern void finish_stmt_tree PARAMS ((tree *));
extern int statement_code_p PARAMS ((enum tree_code));
extern tree walk_stmt_tree PARAMS ((tree *,
walk_tree_fn,
void *));
extern void prep_stmt PARAMS ((tree));
extern void expand_stmt PARAMS ((tree));
extern void mark_stmt_tree PARAMS ((void *));
extern void shadow_warning PARAMS ((const char *,
tree, tree));
extern tree c_begin_if_stmt PARAMS ((void));
extern tree c_begin_while_stmt PARAMS ((void));
extern void c_finish_while_stmt_cond PARAMS ((tree, tree));
/* Extra information associated with a DECL. Other C dialects extend
this structure in various ways. The C front-end only uses this
structure for FUNCTION_DECLs; all other DECLs have a NULL
DECL_LANG_SPECIFIC field. */
struct c_lang_decl {
unsigned declared_inline : 1;
};
/* In a FUNCTION_DECL for which DECL_BUILT_IN does not hold, this is
the approximate number of statements in this function. There is
no need for this number to be exact; it is only used in various
heuristics regarding optimization. */
#define DECL_NUM_STMTS(NODE) \
(FUNCTION_DECL_CHECK (NODE)->decl.u1.i)
extern void c_mark_lang_decl PARAMS ((struct c_lang_decl *));
/* The variant of the C language being processed. Each C language
front-end defines this variable. */
extern c_language_kind c_language;
/* Nonzero means give string constants the type `const char *', rather
than `char *'. */
extern int flag_const_strings;
/* Nonzero means give `double' the same size as `float'. */
extern int flag_short_double;
/* Nonzero means give `wchar_t' the same size as `short'. */
extern int flag_short_wchar;
/* Warn about *printf or *scanf format/argument anomalies. */
extern int warn_format;
/* Warn about Y2K problems with strftime formats. */
extern int warn_format_y2k;
/* Warn about excess arguments to formats. */
extern int warn_format_extra_args;
/* Warn about non-literal format arguments. */
extern int warn_format_nonliteral;
/* Warn about possible security problems with calls to format functions. */
extern int warn_format_security;
/* Warn about possible violations of sequence point rules. */
extern int warn_sequence_point;
/* Warn about functions which might be candidates for format attributes. */
extern int warn_missing_format_attribute;
/* Nonzero means do not warn that K&R style main() is not a function prototype. */
extern int flag_bsd_no_warn_kr_main;
/* Nonzero means warn about sizeof (function) or addition/subtraction
of function pointers. */
extern int warn_pointer_arith;
/* Nonzero means to warn about compile-time division by zero. */
extern int warn_div_by_zero;
/* Nonzero means do some things the same way PCC does. */
extern int flag_traditional;
/* Nonzero means enable C89 Amendment 1 features. */
extern int flag_isoc94;
/* Nonzero means use the ISO C99 dialect of C. */
extern int flag_isoc99;
/* Nonzero means allow the BSD kernel printf enhancments. */
extern int flag_bsd_format;
/* Nonzero means environment is hosted (i.e., not freestanding) */
extern int flag_hosted;
/* Nonzero means add default format_arg attributes for functions not
in ISO C. */
extern int flag_noniso_default_format_attributes;
/* Nonzero means don't recognize any builtin functions. */
extern int flag_no_builtin;
/* Nonzero means don't recognize the non-ANSI builtin functions.
-ansi sets this. */
extern int flag_no_nonansi_builtin;
/* Nonzero means warn about suggesting putting in ()'s. */
extern int warn_parentheses;
/* Warn if a type conversion is done that might have confusing results. */
extern int warn_conversion;
/* Nonzero means warn about usage of long long,
when `-pedantic' and not C99. */
extern int warn_long_long;
/* Nonzero means the expression being parsed will never be evaluated.
This is a count, since unevaluated expressions can nest. */
extern int skip_evaluation;
/* C types are partitioned into three subsets: object, function, and
incomplete types. */
#define C_TYPE_OBJECT_P(type) \
(TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
#define C_TYPE_INCOMPLETE_P(type) \
(TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
#define C_TYPE_FUNCTION_P(type) \
(TREE_CODE (type) == FUNCTION_TYPE)
/* For convenience we define a single macro to identify the class of
object or incomplete types. */
#define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
(!C_TYPE_FUNCTION_P (type))
/* Record in each node resulting from a binary operator
what operator was specified for it. */
#define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp))
/* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
ID is the identifier to use, NAME is the string.
TYPE_DEP indicates whether it depends on type of the function or not
(i.e. __PRETTY_FUNCTION__). */
extern tree (*make_fname_decl) PARAMS ((tree, int));
extern tree identifier_global_value PARAMS ((tree));
extern void record_builtin_type PARAMS ((enum rid,
const char *, tree));
extern tree build_void_list_node PARAMS ((void));
extern void start_fname_decls PARAMS ((void));
extern void finish_fname_decls PARAMS ((void));
extern const char *fname_as_string PARAMS ((int));
extern tree fname_decl PARAMS ((unsigned, tree));
extern const char *fname_string PARAMS ((unsigned));
extern void check_function_format PARAMS ((int *, tree, tree));
extern void set_Wformat PARAMS ((int));
extern tree handle_format_attribute PARAMS ((tree *, tree, tree,
int, bool *));
extern tree handle_format_arg_attribute PARAMS ((tree *, tree, tree,
int, bool *));
extern void c_common_insert_default_attributes PARAMS ((tree));
extern void c_apply_type_quals_to_decl PARAMS ((int, tree));
extern tree c_sizeof PARAMS ((tree));
extern tree c_alignof PARAMS ((tree));
extern tree c_alignof_expr PARAMS ((tree));
/* Print an error message for invalid operands to arith operation CODE.
NOP_EXPR is used as a special case (see truthvalue_conversion). */
extern void binary_op_error PARAMS ((enum tree_code));
extern tree c_expand_expr_stmt PARAMS ((tree));
extern void c_expand_start_cond PARAMS ((tree, int, tree));
extern void c_finish_then PARAMS ((void));
extern void c_expand_start_else PARAMS ((void));
extern void c_finish_else PARAMS ((void));
extern void c_expand_end_cond PARAMS ((void));
/* Validate the expression after `case' and apply default promotions. */
extern tree check_case_value PARAMS ((tree));
/* Concatenate a list of STRING_CST nodes into one STRING_CST. */
extern tree combine_strings PARAMS ((tree));
extern void constant_expression_warning PARAMS ((tree));
extern tree convert_and_check PARAMS ((tree, tree));
extern void overflow_warning PARAMS ((tree));
extern void unsigned_conversion_warning PARAMS ((tree, tree));
/* Read the rest of the current #-directive line. */
extern char *get_directive_line PARAMS ((void));
#define GET_DIRECTIVE_LINE() get_directive_line ()
/* Subroutine of build_binary_op, used for comparison operations.
See if the operands have both been converted from subword integer types
and, if so, perhaps change them both back to their original type. */
extern tree shorten_compare PARAMS ((tree *, tree *, tree *, enum tree_code *));
extern tree pointer_int_sum PARAMS ((enum tree_code, tree, tree));
extern unsigned int min_precision PARAMS ((tree, int));
/* Add qualifiers to a type, in the fashion for C. */
extern tree c_build_qualified_type PARAMS ((tree, int));
/* Build tree nodes and builtin functions common to both C and C++ language
frontends. */
extern void c_common_nodes_and_builtins PARAMS ((void));
extern void disable_builtin_function PARAMS ((const char *));
extern tree build_va_arg PARAMS ((tree, tree));
extern void c_common_init_options PARAMS ((enum c_language_kind));
extern void c_common_post_options PARAMS ((void));
extern const char *c_common_init PARAMS ((const char *));
extern void c_common_finish PARAMS ((void));
extern HOST_WIDE_INT c_common_get_alias_set PARAMS ((tree));
extern bool c_promoting_integer_type_p PARAMS ((tree));
extern int self_promoting_args_p PARAMS ((tree));
extern tree simple_type_promotes_to PARAMS ((tree));
extern tree strip_array_types PARAMS ((tree));
/* These macros provide convenient access to the various _STMT nodes. */
/* Nonzero if this statement should be considered a full-expression,
i.e., if temporaries created during this statement should have
their destructors run at the end of this statement. (In C, this
will always be false, since there are no destructors.) */
#define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE))
/* IF_STMT accessors. These give access to the condition of the if
statement, the then block of the if statement, and the else block
of the if statement if it exists. */
#define IF_COND(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 0)
#define THEN_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 1)
#define ELSE_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 2)
/* WHILE_STMT accessors. These give access to the condition of the
while statement and the body of the while statement, respectively. */
#define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0)
#define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1)
/* DO_STMT accessors. These give access to the condition of the do
statement and the body of the do statement, respectively. */
#define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0)
#define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1)
/* RETURN_STMT accessors. These give the expression associated with a
return statement, and whether it should be ignored when expanding
(as opposed to inlining). */
#define RETURN_EXPR(NODE) TREE_OPERAND (RETURN_STMT_CHECK (NODE), 0)
/* EXPR_STMT accessor. This gives the expression associated with an
expression statement. */
#define EXPR_STMT_EXPR(NODE) TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0)
/* FOR_STMT accessors. These give access to the init statement,
condition, update expression, and body of the for statement,
respectively. */
#define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0)
#define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1)
#define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2)
#define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3)
/* SWITCH_STMT accessors. These give access to the condition, body and
original condition type (before any compiler conversions)
of the switch statement, respectively. */
#define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0)
#define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1)
#define SWITCH_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2)
/* CASE_LABEL accessors. These give access to the high and low values
of a case label, respectively. */
#define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 0)
#define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 1)
#define CASE_LABEL_DECL(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 2)
/* GOTO_STMT accessor. This gives access to the label associated with
a goto statement. */
#define GOTO_DESTINATION(NODE) TREE_OPERAND (GOTO_STMT_CHECK (NODE), 0)
/* True for goto created artifically by the compiler. */
#define GOTO_FAKE_P(NODE) (TREE_LANG_FLAG_0 (GOTO_STMT_CHECK (NODE)))
/* COMPOUND_STMT accessor. This gives access to the TREE_LIST of
statements associated with a compound statement. The result is the
first statement in the list. Succeeding nodes can be accessed by
calling TREE_CHAIN on a node in the list. */
#define COMPOUND_BODY(NODE) TREE_OPERAND (COMPOUND_STMT_CHECK (NODE), 0)
/* ASM_STMT accessors. ASM_STRING returns a STRING_CST for the
instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and
ASM_CLOBBERS represent the outputs, inputs, and clobbers for the
statement. */
#define ASM_CV_QUAL(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 0)
#define ASM_STRING(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 1)
#define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 2)
#define ASM_INPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 3)
#define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 4)
/* DECL_STMT accessor. This gives access to the DECL associated with
the given declaration statement. */
#define DECL_STMT_DECL(NODE) TREE_OPERAND (DECL_STMT_CHECK (NODE), 0)
/* STMT_EXPR accessor. */
#define STMT_EXPR_STMT(NODE) TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0)
/* Nonzero if this statement-expression does not have an associated scope. */
#define STMT_EXPR_NO_SCOPE(NODE) \
TREE_LANG_FLAG_0 (STMT_EXPR_CHECK (NODE))
/* LABEL_STMT accessor. This gives access to the label associated with
the given label statement. */
#define LABEL_STMT_LABEL(NODE) TREE_OPERAND (LABEL_STMT_CHECK (NODE), 0)
/* COMPOUND_LITERAL_EXPR accessors. */
#define COMPOUND_LITERAL_EXPR_DECL_STMT(NODE) \
TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0)
#define COMPOUND_LITERAL_EXPR_DECL(NODE) \
DECL_STMT_DECL (COMPOUND_LITERAL_EXPR_DECL_STMT (NODE))
/* Nonzero if this SCOPE_STMT is for the beginning of a scope. */
#define SCOPE_BEGIN_P(NODE) \
(TREE_LANG_FLAG_0 (SCOPE_STMT_CHECK (NODE)))
/* Nonzero if this SCOPE_STMT is for the end of a scope. */
#define SCOPE_END_P(NODE) \
(!SCOPE_BEGIN_P (SCOPE_STMT_CHECK (NODE)))
/* The BLOCK containing the declarations contained in this scope. */
#define SCOPE_STMT_BLOCK(NODE) \
(TREE_OPERAND (SCOPE_STMT_CHECK (NODE), 0))
/* Nonzero for a SCOPE_STMT if there were no variables in this scope. */
#define SCOPE_NULLIFIED_P(NODE) \
(SCOPE_STMT_BLOCK ((NODE)) == NULL_TREE)
/* Nonzero for a SCOPE_STMT which represents a lexical scope, but
which should be treated as non-existent from the point of view of
running cleanup actions. */
#define SCOPE_NO_CLEANUPS_P(NODE) \
(TREE_LANG_FLAG_3 (SCOPE_STMT_CHECK (NODE)))
/* Nonzero for a SCOPE_STMT if this statement is for a partial scope.
For example, in:
S s;
l:
S s2;
goto l;
there is (implicitly) a new scope after `l', even though there are
no curly braces. In particular, when we hit the goto, we must
destroy s2 and then re-construct it. For the implicit scope,
SCOPE_PARTIAL_P will be set. */
#define SCOPE_PARTIAL_P(NODE) \
(TREE_LANG_FLAG_4 (SCOPE_STMT_CHECK (NODE)))
/* Nonzero for an ASM_STMT if the assembly statement is volatile. */
#define ASM_VOLATILE_P(NODE) \
(ASM_CV_QUAL (ASM_STMT_CHECK (NODE)) != NULL_TREE)
/* The VAR_DECL to clean up in a CLEANUP_STMT. */
#define CLEANUP_DECL(NODE) \
TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 0)
/* The cleanup to run in a CLEANUP_STMT. */
#define CLEANUP_EXPR(NODE) \
TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 1)
/* The filename we are changing to as of this FILE_STMT. */
#define FILE_STMT_FILENAME_NODE(NODE) \
(TREE_OPERAND (FILE_STMT_CHECK (NODE), 0))
#define FILE_STMT_FILENAME(NODE) \
(IDENTIFIER_POINTER (FILE_STMT_FILENAME_NODE (NODE)))
/* The line-number at which a statement began. But if
STMT_LINENO_FOR_FN_P does holds, then this macro gives the
line number for the end of the current function instead. */
#define STMT_LINENO(NODE) \
(TREE_COMPLEXITY ((NODE)))
/* If non-zero, the STMT_LINENO for NODE is the line at which the
function ended. */
#define STMT_LINENO_FOR_FN_P(NODE) \
(TREE_LANG_FLAG_2 ((NODE)))
/* Nonzero if we want the new ISO rules for pushing a new scope for `for'
initialization variables. */
#define NEW_FOR_SCOPE_P(NODE) (TREE_LANG_FLAG_0 (NODE))
/* Nonzero if we want to create an ASM_INPUT instead of an
ASM_OPERAND with no operands. */
#define ASM_INPUT_P(NODE) (TREE_LANG_FLAG_0 (NODE))
#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM,
enum c_tree_code {
C_DUMMY_TREE_CODE = LAST_AND_UNUSED_TREE_CODE,
#include "c-common.def"
LAST_C_TREE_CODE
};
#undef DEFTREECODE
extern void add_c_tree_codes PARAMS ((void));
extern void genrtl_do_pushlevel PARAMS ((void));
extern void genrtl_goto_stmt PARAMS ((tree));
extern void genrtl_expr_stmt PARAMS ((tree));
extern void genrtl_expr_stmt_value PARAMS ((tree, int, int));
extern void genrtl_decl_stmt PARAMS ((tree));
extern void genrtl_if_stmt PARAMS ((tree));
extern void genrtl_while_stmt PARAMS ((tree));
extern void genrtl_do_stmt PARAMS ((tree));
extern void genrtl_return_stmt PARAMS ((tree));
extern void genrtl_for_stmt PARAMS ((tree));
extern void genrtl_break_stmt PARAMS ((void));
extern void genrtl_continue_stmt PARAMS ((void));
extern void genrtl_scope_stmt PARAMS ((tree));
extern void genrtl_switch_stmt PARAMS ((tree));
extern void genrtl_case_label PARAMS ((tree));
extern void genrtl_compound_stmt PARAMS ((tree));
extern void genrtl_asm_stmt PARAMS ((tree, tree,
tree, tree,
tree, int));
extern void genrtl_decl_cleanup PARAMS ((tree));
extern int stmts_are_full_exprs_p PARAMS ((void));
extern int anon_aggr_type_p PARAMS ((tree));
/* For a VAR_DECL that is an anonymous union, these are the various
sub-variables that make up the anonymous union. */
#define DECL_ANON_UNION_ELEMS(NODE) DECL_ARGUMENTS ((NODE))
/* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
#define DECL_C_BIT_FIELD(NODE) \
(DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
#define SET_DECL_C_BIT_FIELD(NODE) \
(DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
#define CLEAR_DECL_C_BIT_FIELD(NODE) \
(DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
/* In a VAR_DECL, nonzero if the decl is a register variable with
an explicit asm specification. */
#define DECL_C_HARD_REGISTER(DECL) DECL_LANG_FLAG_4 (VAR_DECL_CHECK (DECL))
extern void emit_local_var PARAMS ((tree));
extern void make_rtl_for_local_static PARAMS ((tree));
extern tree expand_cond PARAMS ((tree));
extern tree c_expand_return PARAMS ((tree));
extern tree do_case PARAMS ((tree, tree));
extern tree build_stmt PARAMS ((enum tree_code, ...));
extern tree build_case_label PARAMS ((tree, tree, tree));
extern tree build_continue_stmt PARAMS ((void));
extern tree build_break_stmt PARAMS ((void));
extern tree build_return_stmt PARAMS ((tree));
#define COMPOUND_STMT_NO_SCOPE(NODE) TREE_LANG_FLAG_0 (NODE)
/* Used by the C++ frontend to mark the block around the member
initializers and cleanups. */
#define COMPOUND_STMT_BODY_BLOCK(NODE) TREE_LANG_FLAG_3 (NODE)
extern void c_expand_asm_operands PARAMS ((tree, tree, tree, tree, int, const char *, int));
/* These functions must be defined by each front-end which implements
a variant of the C language. They are used in c-common.c. */
extern tree build_unary_op PARAMS ((enum tree_code,
tree, int));
extern tree build_binary_op PARAMS ((enum tree_code,
tree, tree, int));
extern int lvalue_p PARAMS ((tree));
extern tree default_conversion PARAMS ((tree));
/* Given two integer or real types, return the type for their sum.
Given two compatible ANSI C types, returns the merged type. */
extern tree common_type PARAMS ((tree, tree));
extern tree expand_tree_builtin PARAMS ((tree, tree, tree));
extern tree decl_constant_value PARAMS ((tree));
/* Handle increment and decrement of boolean types. */
extern tree boolean_increment PARAMS ((enum tree_code,
tree));
/* Hook currently used only by the C++ front end to reset internal state
after entering or leaving a header file. */
extern void extract_interface_info PARAMS ((void));
extern void mark_c_language_function PARAMS ((struct language_function *));
extern int case_compare PARAMS ((splay_tree_key,
splay_tree_key));
extern tree c_add_case_label PARAMS ((splay_tree,
tree, tree,
tree));
extern tree build_function_call PARAMS ((tree, tree));
extern tree finish_label_address_expr PARAMS ((tree));
/* Same function prototype, but the C and C++ front ends have
different implementations. Used in c-common.c. */
extern tree lookup_label PARAMS ((tree));
/* enum expand_modified is in expr.h, as is the macro below. */
#ifdef QUEUED_VAR
extern rtx c_expand_expr PARAMS ((tree, rtx, enum machine_mode,
enum expand_modifier));
#endif
extern int c_safe_from_p PARAMS ((rtx, tree));
extern int c_staticp PARAMS ((tree));
extern int c_unsafe_for_reeval PARAMS ((tree));
/* Information recorded about each file examined during compilation. */
struct c_fileinfo
{
int time; /* Time spent in the file. */
short interface_only; /* Flags - used only by C++ */
short interface_unknown;
};
struct c_fileinfo *get_fileinfo PARAMS ((const char *));
extern void dump_time_statistics PARAMS ((void));
#endif /* ! GCC_C_COMMON_H */
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