| /* The lang_hooks data structure. |
| Copyright 2001 Free Software Foundation, Inc. |
| |
| This file is part of GNU CC. |
| |
| GNU CC 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. |
| |
| GNU CC 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 GNU CC; see the file COPYING. If not, write to |
| the Free Software Foundation, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #ifndef GCC_LANG_HOOKS_H |
| #define GCC_LANG_HOOKS_H |
| |
| /* A print hook for print_tree (). */ |
| typedef void (*lang_print_tree_hook) PARAMS ((FILE *, tree, int indent)); |
| |
| /* The following hooks are documented in langhooks.c. Must not be |
| NULL. */ |
| |
| struct lang_hooks_for_tree_inlining |
| { |
| union tree_node *(*walk_subtrees) PARAMS ((union tree_node **, int *, |
| union tree_node *(*) |
| (union tree_node **, |
| int *, void *), |
| void *, void *)); |
| int (*cannot_inline_tree_fn) PARAMS ((union tree_node **)); |
| int (*disregard_inline_limits) PARAMS ((union tree_node *)); |
| union tree_node *(*add_pending_fn_decls) PARAMS ((void *, |
| union tree_node *)); |
| int (*tree_chain_matters_p) PARAMS ((union tree_node *)); |
| int (*auto_var_in_fn_p) PARAMS ((union tree_node *, union tree_node *)); |
| union tree_node *(*copy_res_decl_for_inlining) PARAMS ((union tree_node *, |
| union tree_node *, |
| union tree_node *, |
| void *, int *, |
| void *)); |
| int (*anon_aggr_type_p) PARAMS ((union tree_node *)); |
| int (*start_inlining) PARAMS ((union tree_node *)); |
| void (*end_inlining) PARAMS ((union tree_node *)); |
| }; |
| |
| /* The following hooks are used by tree-dump.c. */ |
| |
| struct lang_hooks_for_tree_dump |
| { |
| /* Dump language-specific parts of tree nodes. Returns non-zero if it |
| does not want the usual dumping of the second argument. */ |
| int (*dump_tree) PARAMS ((void *, tree)); |
| |
| /* Determine type qualifiers in a language-specific way. */ |
| int (*type_quals) PARAMS ((tree)); |
| }; |
| |
| /* Language-specific hooks. See langhooks-def.h for defaults. */ |
| |
| struct lang_hooks |
| { |
| /* String identifying the front end. e.g. "GNU C++". */ |
| const char *name; |
| |
| /* sizeof (struct lang_identifier), so make_node () creates |
| identifier nodes long enough for the language-specific slots. */ |
| size_t identifier_size; |
| |
| /* The first callback made to the front end, for simple |
| initialization needed before any calls to decode_option. */ |
| void (*init_options) PARAMS ((void)); |
| |
| /* Function called with an option vector as argument, to decode a |
| single option (typically starting with -f or -W or +). It should |
| return the number of command-line arguments it uses if it handles |
| the option, or 0 and not complain if it does not recognise the |
| option. If this function returns a negative number, then its |
| absolute value is the number of command-line arguments used, but, |
| in addition, no language-independent option processing should be |
| done for this option. */ |
| int (*decode_option) PARAMS ((int, char **)); |
| |
| /* Called when all command line options have been parsed. Should do |
| any required consistency checks, modifications etc. Complex |
| initialization should be left to the "init" callback, since GC |
| and the identifier hashes are set up between now and then. */ |
| void (*post_options) PARAMS ((void)); |
| |
| /* Called after post_options, to initialize the front end. The main |
| input filename is passed, which may be NULL; the front end should |
| return the original filename (e.g. foo.i -> foo.c). Return NULL |
| to indicate a serious error of some sort; in that case no |
| compilation is performed, and the finish hook is called |
| immediately. */ |
| const char * (*init) PARAMS ((const char *)); |
| |
| /* Called at the end of compilation, as a finalizer. */ |
| void (*finish) PARAMS ((void)); |
| |
| /* Called immediately after parsing to clear the binding stack. */ |
| void (*clear_binding_stack) PARAMS ((void)); |
| |
| /* Called to obtain the alias set to be used for an expression or type. |
| Returns -1 if the language does nothing special for it. */ |
| HOST_WIDE_INT (*get_alias_set) PARAMS ((tree)); |
| |
| /* Called with an expression that is to be processed as a constant. |
| Returns either the same expression or a language-independent |
| constant equivalent to its input. */ |
| tree (*expand_constant) 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 |
| recursively explore the TREE_OPERANDs of an expression, this hook |
| should not reexamine those pieces. This routine may recursively |
| call safe_from_p; it should always pass `0' as the TOP_P |
| parameter. */ |
| int (*safe_from_p) PARAMS ((rtx, tree)); |
| |
| /* Hook called by staticp for language-specific tree codes. */ |
| int (*staticp) PARAMS ((tree)); |
| |
| /* Nonzero if TYPE_READONLY and TREE_READONLY should always be honored. */ |
| bool honor_readonly; |
| |
| /* The front end can add its own statistics to -fmem-report with |
| this hook. It should output to stderr. */ |
| void (*print_statistics) PARAMS ((void)); |
| |
| /* Called by print_tree when there is a tree of class 'x' that it |
| doesn't know how to display. */ |
| lang_print_tree_hook print_xnode; |
| |
| /* Called to print language-dependent parts of a class 'd', class |
| 't', and IDENTIFIER_NODE nodes. */ |
| lang_print_tree_hook print_decl; |
| lang_print_tree_hook print_type; |
| lang_print_tree_hook print_identifier; |
| |
| /* 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)); |
| |
| struct lang_hooks_for_tree_inlining tree_inlining; |
| |
| struct lang_hooks_for_tree_dump tree_dump; |
| |
| /* Whenever you add entries here, make sure you adjust langhooks-def.h |
| and langhooks.c accordingly. */ |
| }; |
| |
| /* Each front end provides its own. */ |
| extern const struct lang_hooks lang_hooks; |
| |
| #endif /* GCC_LANG_HOOKS_H */ |