diff options
Diffstat (limited to 'gcc/c-lang.c')
| -rw-r--r-- | gcc/c-lang.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/gcc/c-lang.c b/gcc/c-lang.c index 36d73d29c5e..e642ade6a8b 100644 --- a/gcc/c-lang.c +++ b/gcc/c-lang.c @@ -37,10 +37,18 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #include "cpplib.h" static int c_tree_printer PARAMS ((output_buffer *)); +static size_t lang_type_size_fetcher PARAMS ((const void *v, + type_definition_p td)); +static int lang_type_more_fields PARAMS ((struct field_definition_s *fp, + const void *v, + unsigned n, code_type c, + type_definition_p td)); + static int c_missing_noreturn_ok_p PARAMS ((tree)); static void c_init PARAMS ((void)); static void c_init_options PARAMS ((void)); static void c_post_options PARAMS ((void)); +static void c_tree_prewrite_hook PARAMS ((const void *)); /* Each front end provides its own. */ struct lang_hooks lang_hooks = {c_init, @@ -68,6 +76,79 @@ c_init_options () flag_bounds_check = -1; } +static const struct field_definition_s c_tree_field_defs[] = { + { 'd', 0xFF, offsetof (union tree_node, decl.lang_specific), + lang_decl_type_def }, + { 't', 0xFF, offsetof (union tree_node, type.lang_specific), + lang_type_type_def }, + { IDENTIFIER_NODE << 8, 0xFF00, + offsetof (struct lang_identifier, global_value), tree_type_def }, + { IDENTIFIER_NODE << 8, 0xFF00, + offsetof (struct lang_identifier, local_value), tree_type_def }, + { IDENTIFIER_NODE << 8, 0xFF00, + offsetof (struct lang_identifier, label_value), tree_type_def }, + { IDENTIFIER_NODE << 8, 0xFF00, + offsetof (struct lang_identifier, implicit_decl), tree_type_def }, + { IDENTIFIER_NODE << 8, 0xFF00, + offsetof (struct lang_identifier, error_locus), tree_type_def }, + { IDENTIFIER_NODE << 8, 0xFF00, + offsetof (struct lang_identifier, limbo_value), tree_type_def }, + NO_MORE_FIELDS +}; + +static const struct field_definition_s c_lang_decl_field_defs[] = { + { 0, 0, offsetof (struct lang_decl, base.saved_tree), tree_type_def }, + NO_MORE_FIELDS +}; + +static size_t +lang_type_size_fetcher (v, td) + const void *v; + type_definition_p td ATTRIBUTE_UNUSED; +{ + struct lang_type *t = (struct lang_type *)v; + return sizeof (*t) - sizeof (tree) + t->len * sizeof (tree); +} + +static int +lang_type_more_fields (fp, v, n, c, td) + struct field_definition_s *fp; + const void *v; + unsigned n; + code_type c ATTRIBUTE_UNUSED; + type_definition_p td ATTRIBUTE_UNUSED; +{ + struct lang_type *t = (struct lang_type *)v; + if (n < (unsigned)t->len) + { + fp->offset = offsetof (struct lang_type, elts) + n * sizeof (tree); + fp->type = tree_type_def; + return 1; + } + return 0; +} + +/* A function to be called for each tree node before they are written out + by the precompiled headers mechanism. Currently we use this to note + that the fields are not sorted, as PCH fails to preserve address order + for identifiers. */ + +static void +c_tree_prewrite_hook (t_v) + const void *t_v; +{ + tree t = (tree)t_v; + if (TYPE_P (t)) + TYPE_LANG_SPECIFIC (t) = 0; +} + + +static const struct field_definition_s c_lang_function_field_defs[] = { + + NO_MORE_FIELDS +}; + + static void c_init () { @@ -92,7 +173,16 @@ c_init () lang_expand_decl_stmt = &c_expand_decl_stmt; lang_missing_noreturn_ok_p = &c_missing_noreturn_ok_p; + add_tree_fields (c_tree_field_defs); + tree_type_def->prewrite_hook = c_tree_prewrite_hook; + lang_decl_type_def->size = sizeof (struct lang_decl); + lang_decl_type_def->field_definitions = c_lang_decl_field_defs; + lang_type_type_def->size = sizeof (struct lang_type) - sizeof (tree); + lang_type_type_def->size_fetcher = lang_type_size_fetcher; + lang_type_type_def->more_fields = lang_type_more_fields; + c_parse_init (); + pch_init (); } const char * @@ -101,6 +191,12 @@ lang_identify () return "c"; } +int +lang_toplevel_p () +{ + return global_bindings_p (); +} + void print_lang_statistics () { @@ -225,6 +321,8 @@ finish_cdtor (body) void finish_file () { + if (pch_file) + lang_write_pch (); #ifndef ASM_OUTPUT_CONSTRUCTOR if (static_ctors) { @@ -308,3 +406,10 @@ c_missing_noreturn_ok_p (decl) ok for the `main' function in hosted implementations. */ return flag_hosted && MAIN_NAME_P (DECL_ASSEMBLER_NAME (decl)); } +void +lang_write_pch () +{ + c_write_pch (); +} + + |