#ifndef GCC_LANG_HOOKS_H
#define GCC_LANG_HOOKS_H
+/* This file should be #include-d after tree.h. */
+
+struct diagnostic_context;
+
/* A print hook for print_tree (). */
typedef void (*lang_print_tree_hook) PARAMS ((FILE *, tree, int indent));
union tree_node *));
};
+/* Lang hooks for management of language-specific data or status
+ when entering / leaving functions etc. */
+struct lang_hooks_for_functions
+{
+ /* Called when entering a function. */
+ void (*init) PARAMS ((struct function *));
+
+ /* Called when leaving a function. */
+ void (*free) PARAMS ((struct function *));
+
+ /* Called when entering a nested function. */
+ void (*enter_nested) PARAMS ((struct function *));
+
+ /* Called when leaving a nested function. */
+ void (*leave_nested) PARAMS ((struct function *));
+
+ /* Lang-specific function data marking for GC. */
+ void (*mark) PARAMS ((struct function *));
+};
+
/* The following hooks are used by tree-dump.c. */
struct lang_hooks_for_tree_dump
int (*type_quals) PARAMS ((tree));
};
+/* Hooks related to types. */
+
+struct lang_hooks_for_types
+{
+ /* Return a new type (with the indicated CODE), doing whatever
+ language-specific processing is required. */
+ tree (*make_type) PARAMS ((enum tree_code));
+
+ /* Given MODE and UNSIGNEDP, return a suitable type-tree with that
+ mode. */
+ tree (*type_for_mode) PARAMS ((enum machine_mode, int));
+
+ /* Given PRECISION and UNSIGNEDP, return a suitable type-tree for an
+ integer type with at least that precision. */
+ tree (*type_for_size) PARAMS ((unsigned, int));
+
+ /* Given an integer type T, return a type like T but unsigned.
+ If T is unsigned, the value is T. */
+ tree (*unsigned_type) PARAMS ((tree));
+
+ /* Given an integer type T, return a type like T but signed.
+ If T is signed, the value is T. */
+ tree (*signed_type) PARAMS ((tree));
+
+ /* Return a type the same as TYPE except unsigned or signed
+ according to UNSIGNEDP. */
+ tree (*signed_or_unsigned_type) PARAMS ((int, tree));
+
+ /* Given a type, apply default promotions to unnamed function
+ arguments and return the new type. Return the same type if no
+ change. Required by any language that supports variadic
+ arguments. The default hook aborts. */
+ tree (*type_promotes_to) PARAMS ((tree));
+
+ /* This routine is called in tree.c to print an error message for
+ invalid use of an incomplete type. VALUE is the expression that
+ was used (or 0 if that isn't known) and TYPE is the type that was
+ invalid. */
+ void (*incomplete_type_error) PARAMS ((tree value, tree type));
+};
+
/* Language hooks related to decls and the symbol table. */
struct lang_hooks_for_decls
/* Returns the chain of decls so far in the current scope level. */
tree (*getdecls) PARAMS ((void));
+
+ /* Returns true when we should warn for an unused global DECL.
+ We will already have checked that it has static binding. */
+ bool (*warn_unused_global) PARAMS ((tree));
};
/* Language-specific hooks. See langhooks-def.h for defaults. */
/* Called at the end of compilation, as a finalizer. */
void (*finish) PARAMS ((void));
- /* Parses the entire file. */
- void (*parse_file) PARAMS ((void));
+ /* Parses the entire file. The argument is non-zero to cause bison
+ parsers to dump debugging information during parsing. */
+ void (*parse_file) PARAMS ((int));
/* Called immediately after parsing to clear the binding stack. */
void (*clear_binding_stack) PARAMS ((void));
constant equivalent to its input. */
tree (*expand_constant) PARAMS ((tree));
+ /* Called by expand_expr for language-specific tree codes.
+ Fourth argument is actually an enum expand_modifier. */
+ rtx (*expand_expr) PARAMS ((tree, rtx, enum machine_mode, int));
+
+ /* Prepare expr to be an argument of a TRUTH_NOT_EXPR or other logical
+ operation.
+
+ This preparation consists of taking the ordinary representation
+ of an expression expr and producing a valid tree boolean
+ expression describing whether expr is nonzero. We could simply
+ always do build_binary_op (NE_EXPR, expr, integer_zero_node, 1),
+ but we optimize comparisons, &&, ||, and !.
+
+ The result should be an expression of boolean type (if not an
+ error_mark_node). */
+ tree (*truthvalue_conversion) PARAMS ((tree));
+
+ /* Possibly apply default attributes to a function (represented by
+ a FUNCTION_DECL). */
+ void (*insert_default_attributes) PARAMS ((tree));
+
/* Hook called by safe_from_p for language-specific tree codes. It is
up to the language front-end to install a hook if it has any such
codes that safe_from_p needs to know about. Since same_from_p will
parameter. */
int (*safe_from_p) PARAMS ((rtx, tree));
+ /* Function to finish handling an incomplete decl at the end of
+ compilation. Default hook is does nothing. */
+ void (*finish_incomplete_decl) PARAMS ((tree));
+
+ /* Function used by unsafe_for_reeval. A non-negative number is
+ returned directly from unsafe_for_reeval, a negative number falls
+ through. The default hook returns a negative number. */
+ int (*unsafe_for_reeval) PARAMS ((tree));
+
+ /* Mark EXP saying that we need to be able to take the address of
+ it; it should not be allocated in a register. Return true if
+ successful. */
+ bool (*mark_addressable) PARAMS ((tree));
+
/* Hook called by staticp for language-specific tree codes. */
int (*staticp) PARAMS ((tree));
things are cleared out. */
tree (*unsave_expr_now) PARAMS ((tree));
+ /* Called by expand_expr to build and return the cleanup-expression
+ for the passed TARGET_EXPR. Return NULL if there is none. */
+ tree (*maybe_build_cleanup) PARAMS ((tree));
+
+ /* Mark nodes held through the lang_specific hooks in the tree. */
+ void (*mark_tree) PARAMS ((tree));
+
+ /* Set the DECL_ASSEMBLER_NAME for a node. If it is the sort of
+ thing that the assembler should talk about, set
+ DECL_ASSEMBLER_NAME to an appropriate IDENTIFIER_NODE.
+ Otherwise, set it to the ERROR_MARK_NODE to ensure that the
+ assembler does not talk about it. */
+ void (*set_decl_assembler_name) PARAMS ((tree));
+
/* Nonzero if TYPE_READONLY and TREE_READONLY should always be honored. */
bool honor_readonly;
types in C++. */
const char *(*decl_printable_name) PARAMS ((tree decl, int verbosity));
- /* Set yydebug for bison-based parsers, when -dy is given on the
- command line. By default, if the parameter is non-zero, prints a
- warning that the front end does not use such a parser. */
- void (*set_yydebug) PARAMS ((int));
+ /* Called by report_error_function to print out function name. */
+ void (*print_error_function) PARAMS ((struct diagnostic_context *,
+ const char *));
+
+ /* Pointers to machine-independent attribute tables, for front ends
+ using attribs.c. If one is NULL, it is ignored. Respectively, a
+ table of attributes specific to the language, a table of
+ attributes common to two or more languages (to allow easy
+ sharing), and a table of attributes for checking formats. */
+ const struct attribute_spec *attribute_table;
+ const struct attribute_spec *common_attribute_table;
+ const struct attribute_spec *format_attribute_table;
+
+ /* Function-related language hooks. */
+ struct lang_hooks_for_functions function;
struct lang_hooks_for_tree_inlining tree_inlining;
struct lang_hooks_for_decls decls;
+ struct lang_hooks_for_types types;
+
/* Whenever you add entries here, make sure you adjust langhooks-def.h
and langhooks.c accordingly. */
};
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