| /* Library interface to C front end |
| Copyright (C) 2014-2019 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 3, 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 COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <cc1plugin-config.h> |
| |
| #undef PACKAGE_NAME |
| #undef PACKAGE_STRING |
| #undef PACKAGE_TARNAME |
| #undef PACKAGE_VERSION |
| |
| #include "../gcc/config.h" |
| |
| #undef PACKAGE_NAME |
| #undef PACKAGE_STRING |
| #undef PACKAGE_TARNAME |
| #undef PACKAGE_VERSION |
| |
| #include "gcc-plugin.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "stringpool.h" |
| |
| #include "gcc-interface.h" |
| #include "hash-set.h" |
| #include "machmode.h" |
| #include "vec.h" |
| #include "double-int.h" |
| #include "input.h" |
| #include "alias.h" |
| #include "symtab.h" |
| #include "options.h" |
| #include "wide-int.h" |
| #include "inchash.h" |
| #include "tree.h" |
| #include "fold-const.h" |
| #include "stor-layout.h" |
| #include "c-tree.h" |
| #include "toplev.h" |
| #include "timevar.h" |
| #include "hash-table.h" |
| #include "tm.h" |
| #include "c-family/c-pragma.h" |
| #include "c-lang.h" |
| #include "diagnostic.h" |
| #include "langhooks.h" |
| #include "langhooks-def.h" |
| |
| #include "callbacks.hh" |
| #include "connection.hh" |
| #include "marshall-c.hh" |
| #include "rpc.hh" |
| |
| #ifdef __GNUC__ |
| #pragma GCC visibility push(default) |
| #endif |
| int plugin_is_GPL_compatible; |
| #ifdef __GNUC__ |
| #pragma GCC visibility pop |
| #endif |
| |
| |
| |
| // This is put into the lang hooks when the plugin starts. |
| |
| static void |
| plugin_print_error_function (diagnostic_context *context, const char *file, |
| diagnostic_info *diagnostic) |
| { |
| if (current_function_decl != NULL_TREE |
| && DECL_NAME (current_function_decl) != NULL_TREE |
| && strcmp (IDENTIFIER_POINTER (DECL_NAME (current_function_decl)), |
| GCC_FE_WRAPPER_FUNCTION) == 0) |
| return; |
| lhd_print_error_function (context, file, diagnostic); |
| } |
| |
| |
| |
| static unsigned long long |
| convert_out (tree t) |
| { |
| return (unsigned long long) (uintptr_t) t; |
| } |
| |
| static tree |
| convert_in (unsigned long long v) |
| { |
| return (tree) (uintptr_t) v; |
| } |
| |
| |
| |
| struct decl_addr_value |
| { |
| tree decl; |
| tree address; |
| }; |
| |
| struct decl_addr_hasher : free_ptr_hash<decl_addr_value> |
| { |
| static inline hashval_t hash (const decl_addr_value *); |
| static inline bool equal (const decl_addr_value *, const decl_addr_value *); |
| }; |
| |
| inline hashval_t |
| decl_addr_hasher::hash (const decl_addr_value *e) |
| { |
| return IDENTIFIER_HASH_VALUE (DECL_NAME (e->decl)); |
| } |
| |
| inline bool |
| decl_addr_hasher::equal (const decl_addr_value *p1, const decl_addr_value *p2) |
| { |
| return p1->decl == p2->decl; |
| } |
| |
| |
| |
| struct string_hasher : nofree_ptr_hash<const char> |
| { |
| static inline hashval_t hash (const char *s) |
| { |
| return htab_hash_string (s); |
| } |
| |
| static inline bool equal (const char *p1, const char *p2) |
| { |
| return strcmp (p1, p2) == 0; |
| } |
| }; |
| |
| |
| |
| // A wrapper for pushdecl that doesn't let gdb have a chance to |
| // instantiate a symbol. |
| |
| static void |
| pushdecl_safe (tree decl) |
| { |
| void (*save) (enum c_oracle_request, tree identifier); |
| |
| save = c_binding_oracle; |
| c_binding_oracle = NULL; |
| pushdecl (decl); |
| c_binding_oracle = save; |
| } |
| |
| |
| |
| struct plugin_context : public cc1_plugin::connection |
| { |
| plugin_context (int fd); |
| |
| // Map decls to addresses. |
| hash_table<decl_addr_hasher> address_map; |
| |
| // A collection of trees that are preserved for the GC. |
| hash_table< nofree_ptr_hash<tree_node> > preserved; |
| |
| // File name cache. |
| hash_table<string_hasher> file_names; |
| |
| // Perform GC marking. |
| void mark (); |
| |
| // Preserve a tree during the plugin's operation. |
| tree preserve (tree t) |
| { |
| tree_node **slot = preserved.find_slot (t, INSERT); |
| *slot = t; |
| return t; |
| } |
| |
| location_t get_location_t (const char *filename, |
| unsigned int line_number) |
| { |
| if (filename == NULL) |
| return UNKNOWN_LOCATION; |
| |
| filename = intern_filename (filename); |
| linemap_add (line_table, LC_ENTER, false, filename, line_number); |
| location_t loc = linemap_line_start (line_table, line_number, 0); |
| linemap_add (line_table, LC_LEAVE, false, NULL, 0); |
| return loc; |
| } |
| |
| private: |
| |
| // Add a file name to FILE_NAMES and return the canonical copy. |
| const char *intern_filename (const char *filename) |
| { |
| const char **slot = file_names.find_slot (filename, INSERT); |
| if (*slot == NULL) |
| { |
| /* The file name must live as long as the line map, which |
| effectively means as long as this compilation. So, we copy |
| the string here but never free it. */ |
| *slot = xstrdup (filename); |
| } |
| return *slot; |
| } |
| }; |
| |
| static plugin_context *current_context; |
| |
| |
| |
| plugin_context::plugin_context (int fd) |
| : cc1_plugin::connection (fd), |
| address_map (30), |
| preserved (30), |
| file_names (30) |
| { |
| } |
| |
| void |
| plugin_context::mark () |
| { |
| for (hash_table<decl_addr_hasher>::iterator it = address_map.begin (); |
| it != address_map.end (); |
| ++it) |
| { |
| ggc_mark ((*it)->decl); |
| ggc_mark ((*it)->address); |
| } |
| |
| for (hash_table< nofree_ptr_hash<tree_node> >::iterator |
| it = preserved.begin (); it != preserved.end (); ++it) |
| ggc_mark (&*it); |
| } |
| |
| static void |
| plugin_binding_oracle (enum c_oracle_request kind, tree identifier) |
| { |
| enum gcc_c_oracle_request request; |
| |
| gcc_assert (current_context != NULL); |
| |
| switch (kind) |
| { |
| case C_ORACLE_SYMBOL: |
| request = GCC_C_ORACLE_SYMBOL; |
| break; |
| case C_ORACLE_TAG: |
| request = GCC_C_ORACLE_TAG; |
| break; |
| case C_ORACLE_LABEL: |
| request = GCC_C_ORACLE_LABEL; |
| break; |
| default: |
| abort (); |
| } |
| |
| int ignore; |
| cc1_plugin::call (current_context, "binding_oracle", &ignore, |
| request, IDENTIFIER_POINTER (identifier)); |
| } |
| |
| static void |
| plugin_pragma_user_expression (cpp_reader *) |
| { |
| c_binding_oracle = plugin_binding_oracle; |
| } |
| |
| static void |
| plugin_init_extra_pragmas (void *, void *) |
| { |
| c_register_pragma ("GCC", "user_expression", plugin_pragma_user_expression); |
| } |
| |
| |
| |
| // Maybe rewrite a decl to its address. |
| static tree |
| address_rewriter (tree *in, int *walk_subtrees, void *arg) |
| { |
| plugin_context *ctx = (plugin_context *) arg; |
| |
| if (!DECL_P (*in) || DECL_NAME (*in) == NULL_TREE) |
| return NULL_TREE; |
| |
| decl_addr_value value; |
| value.decl = *in; |
| decl_addr_value *found_value = ctx->address_map.find (&value); |
| if (found_value != NULL) |
| ; |
| else if (DECL_IS_BUILTIN (*in)) |
| { |
| gcc_address address; |
| |
| if (!cc1_plugin::call (ctx, "address_oracle", &address, |
| IDENTIFIER_POINTER (DECL_NAME (*in)))) |
| return NULL_TREE; |
| if (address == 0) |
| return NULL_TREE; |
| |
| // Insert the decl into the address map in case it is referenced |
| // again. |
| value.address = build_int_cst_type (ptr_type_node, address); |
| decl_addr_value **slot = ctx->address_map.find_slot (&value, INSERT); |
| gcc_assert (*slot == NULL); |
| *slot |
| = static_cast<decl_addr_value *> (xmalloc (sizeof (decl_addr_value))); |
| **slot = value; |
| found_value = *slot; |
| } |
| else |
| return NULL_TREE; |
| |
| if (found_value->address != error_mark_node) |
| { |
| // We have an address for the decl, so rewrite the tree. |
| tree ptr_type = build_pointer_type (TREE_TYPE (*in)); |
| *in = fold_build1 (INDIRECT_REF, TREE_TYPE (*in), |
| fold_build1 (CONVERT_EXPR, ptr_type, |
| found_value->address)); |
| } |
| |
| *walk_subtrees = 0; |
| |
| return NULL_TREE; |
| } |
| |
| // When generating code for gdb, we want to be able to use absolute |
| // addresses to refer to otherwise external objects that gdb knows |
| // about. gdb passes in these addresses when building decls, and then |
| // before gimplification we go through the trees, rewriting uses to |
| // the equivalent of "*(TYPE *) ADDR". |
| static void |
| rewrite_decls_to_addresses (void *function_in, void *) |
| { |
| tree function = (tree) function_in; |
| |
| // Do nothing if we're not in gdb. |
| if (current_context == NULL) |
| return; |
| |
| walk_tree (&DECL_SAVED_TREE (function), address_rewriter, current_context, |
| NULL); |
| } |
| |
| |
| |
| gcc_decl |
| plugin_build_decl (cc1_plugin::connection *self, |
| const char *name, |
| enum gcc_c_symbol_kind sym_kind, |
| gcc_type sym_type_in, |
| const char *substitution_name, |
| gcc_address address, |
| const char *filename, |
| unsigned int line_number) |
| { |
| plugin_context *ctx = static_cast<plugin_context *> (self); |
| tree identifier = get_identifier (name); |
| enum tree_code code; |
| tree decl; |
| tree sym_type = convert_in (sym_type_in); |
| |
| switch (sym_kind) |
| { |
| case GCC_C_SYMBOL_FUNCTION: |
| code = FUNCTION_DECL; |
| break; |
| |
| case GCC_C_SYMBOL_VARIABLE: |
| code = VAR_DECL; |
| break; |
| |
| case GCC_C_SYMBOL_TYPEDEF: |
| code = TYPE_DECL; |
| break; |
| |
| case GCC_C_SYMBOL_LABEL: |
| // FIXME: we aren't ready to handle labels yet. |
| // It isn't clear how to translate them properly |
| // and in any case a "goto" isn't likely to work. |
| return convert_out (error_mark_node); |
| |
| default: |
| abort (); |
| } |
| |
| location_t loc = ctx->get_location_t (filename, line_number); |
| |
| decl = build_decl (loc, code, identifier, sym_type); |
| TREE_USED (decl) = 1; |
| TREE_ADDRESSABLE (decl) = 1; |
| |
| if (sym_kind != GCC_C_SYMBOL_TYPEDEF) |
| { |
| decl_addr_value value; |
| |
| DECL_EXTERNAL (decl) = 1; |
| value.decl = decl; |
| if (substitution_name != NULL) |
| { |
| // If the translator gave us a name without a binding, |
| // we can just substitute error_mark_node, since we know the |
| // translator will be reporting an error anyhow. |
| value.address |
| = lookup_name (get_identifier (substitution_name)); |
| if (value.address == NULL_TREE) |
| value.address = error_mark_node; |
| } |
| else |
| value.address = build_int_cst_type (ptr_type_node, address); |
| decl_addr_value **slot = ctx->address_map.find_slot (&value, INSERT); |
| gcc_assert (*slot == NULL); |
| *slot |
| = static_cast<decl_addr_value *> (xmalloc (sizeof (decl_addr_value))); |
| **slot = value; |
| } |
| |
| return convert_out (ctx->preserve (decl)); |
| } |
| |
| int |
| plugin_bind (cc1_plugin::connection *, |
| gcc_decl decl_in, int is_global) |
| { |
| tree decl = convert_in (decl_in); |
| c_bind (DECL_SOURCE_LOCATION (decl), decl, is_global); |
| rest_of_decl_compilation (decl, is_global, 0); |
| return 1; |
| } |
| |
| int |
| plugin_tagbind (cc1_plugin::connection *self, |
| const char *name, gcc_type tagged_type, |
| const char *filename, unsigned int line_number) |
| { |
| plugin_context *ctx = static_cast<plugin_context *> (self); |
| tree t = convert_in (tagged_type), x; |
| c_pushtag (ctx->get_location_t (filename, line_number), |
| get_identifier (name), t); |
| |
| /* Propagate the newly-added type name so that previously-created |
| variant types are not disconnected from their main variants. */ |
| for (x = TYPE_MAIN_VARIANT (t); x; x = TYPE_NEXT_VARIANT (x)) |
| TYPE_NAME (x) = TYPE_NAME (t); |
| |
| return 1; |
| } |
| |
| gcc_type |
| plugin_build_pointer_type (cc1_plugin::connection *, |
| gcc_type base_type) |
| { |
| // No need to preserve a pointer type as the base type is preserved. |
| return convert_out (build_pointer_type (convert_in (base_type))); |
| } |
| |
| // TYPE_NAME needs to be a valid pointer, even if there is no name available. |
| |
| static tree |
| build_anonymous_node (enum tree_code code) |
| { |
| tree node = make_node (code); |
| tree type_decl = build_decl (input_location, TYPE_DECL, NULL_TREE, node); |
| TYPE_NAME (node) = type_decl; |
| TYPE_STUB_DECL (node) = type_decl; |
| return node; |
| } |
| |
| gcc_type |
| plugin_build_record_type (cc1_plugin::connection *self) |
| { |
| plugin_context *ctx = static_cast<plugin_context *> (self); |
| return convert_out (ctx->preserve (build_anonymous_node (RECORD_TYPE))); |
| } |
| |
| gcc_type |
| plugin_build_union_type (cc1_plugin::connection *self) |
| { |
| plugin_context *ctx = static_cast<plugin_context *> (self); |
| return convert_out (ctx->preserve (build_anonymous_node (UNION_TYPE))); |
| } |
| |
| int |
| plugin_build_add_field (cc1_plugin::connection *, |
| gcc_type record_or_union_type_in, |
| const char *field_name, |
| gcc_type field_type_in, |
| unsigned long bitsize, |
| unsigned long bitpos) |
| { |
| tree record_or_union_type = convert_in (record_or_union_type_in); |
| tree field_type = convert_in (field_type_in); |
| |
| gcc_assert (TREE_CODE (record_or_union_type) == RECORD_TYPE |
| || TREE_CODE (record_or_union_type) == UNION_TYPE); |
| |
| /* Note that gdb does not preserve the location of field decls, so |
| we can't provide a decent location here. */ |
| tree decl = build_decl (BUILTINS_LOCATION, FIELD_DECL, |
| get_identifier (field_name), field_type); |
| DECL_FIELD_CONTEXT (decl) = record_or_union_type; |
| |
| if (TREE_CODE (field_type) == INTEGER_TYPE |
| && TYPE_PRECISION (field_type) != bitsize) |
| { |
| DECL_BIT_FIELD_TYPE (decl) = field_type; |
| TREE_TYPE (decl) |
| = c_build_bitfield_integer_type (bitsize, TYPE_UNSIGNED (field_type)); |
| } |
| |
| SET_DECL_MODE (decl, TYPE_MODE (TREE_TYPE (decl))); |
| |
| // There's no way to recover this from DWARF. |
| SET_DECL_OFFSET_ALIGN (decl, TYPE_PRECISION (pointer_sized_int_node)); |
| |
| tree pos = bitsize_int (bitpos); |
| pos_from_bit (&DECL_FIELD_OFFSET (decl), &DECL_FIELD_BIT_OFFSET (decl), |
| DECL_OFFSET_ALIGN (decl), pos); |
| |
| DECL_SIZE (decl) = bitsize_int (bitsize); |
| DECL_SIZE_UNIT (decl) = size_int ((bitsize + BITS_PER_UNIT - 1) |
| / BITS_PER_UNIT); |
| |
| DECL_CHAIN (decl) = TYPE_FIELDS (record_or_union_type); |
| TYPE_FIELDS (record_or_union_type) = decl; |
| |
| return 1; |
| } |
| |
| int |
| plugin_finish_record_or_union (cc1_plugin::connection *, |
| gcc_type record_or_union_type_in, |
| unsigned long size_in_bytes) |
| { |
| tree record_or_union_type = convert_in (record_or_union_type_in); |
| |
| gcc_assert (TREE_CODE (record_or_union_type) == RECORD_TYPE |
| || TREE_CODE (record_or_union_type) == UNION_TYPE); |
| |
| /* We built the field list in reverse order, so fix it now. */ |
| TYPE_FIELDS (record_or_union_type) |
| = nreverse (TYPE_FIELDS (record_or_union_type)); |
| |
| if (TREE_CODE (record_or_union_type) == UNION_TYPE) |
| { |
| /* Unions can just be handled by the generic code. */ |
| layout_type (record_or_union_type); |
| } |
| else |
| { |
| // FIXME there's no way to get this from DWARF, |
| // or even, it seems, a particularly good way to deduce it. |
| SET_TYPE_ALIGN (record_or_union_type, |
| TYPE_PRECISION (pointer_sized_int_node)); |
| |
| TYPE_SIZE (record_or_union_type) = bitsize_int (size_in_bytes |
| * BITS_PER_UNIT); |
| TYPE_SIZE_UNIT (record_or_union_type) = size_int (size_in_bytes); |
| |
| compute_record_mode (record_or_union_type); |
| finish_bitfield_layout (record_or_union_type); |
| // FIXME we have no idea about TYPE_PACKED |
| } |
| |
| tree t = record_or_union_type, x; |
| for (x = TYPE_MAIN_VARIANT (t); x; x = TYPE_NEXT_VARIANT (x)) |
| { |
| /* Like finish_struct, update the qualified variant types. */ |
| TYPE_FIELDS (x) = TYPE_FIELDS (t); |
| TYPE_LANG_SPECIFIC (x) = TYPE_LANG_SPECIFIC (t); |
| C_TYPE_FIELDS_READONLY (x) = C_TYPE_FIELDS_READONLY (t); |
| C_TYPE_FIELDS_VOLATILE (x) = C_TYPE_FIELDS_VOLATILE (t); |
| C_TYPE_VARIABLE_SIZE (x) = C_TYPE_VARIABLE_SIZE (t); |
| /* We copy these fields too. */ |
| SET_TYPE_ALIGN (x, TYPE_ALIGN (t)); |
| TYPE_SIZE (x) = TYPE_SIZE (t); |
| TYPE_SIZE_UNIT (x) = TYPE_SIZE_UNIT (t); |
| if (x != record_or_union_type) |
| compute_record_mode (x); |
| } |
| |
| return 1; |
| } |
| |
| gcc_type |
| plugin_build_enum_type (cc1_plugin::connection *self, |
| gcc_type underlying_int_type_in) |
| { |
| tree underlying_int_type = convert_in (underlying_int_type_in); |
| |
| if (underlying_int_type == error_mark_node) |
| return convert_out (error_mark_node); |
| |
| tree result = build_anonymous_node (ENUMERAL_TYPE); |
| |
| TYPE_PRECISION (result) = TYPE_PRECISION (underlying_int_type); |
| TYPE_UNSIGNED (result) = TYPE_UNSIGNED (underlying_int_type); |
| |
| plugin_context *ctx = static_cast<plugin_context *> (self); |
| return convert_out (ctx->preserve (result)); |
| } |
| |
| int |
| plugin_build_add_enum_constant (cc1_plugin::connection *, |
| gcc_type enum_type_in, |
| const char *name, |
| unsigned long value) |
| { |
| tree cst, decl, cons; |
| tree enum_type = convert_in (enum_type_in); |
| |
| gcc_assert (TREE_CODE (enum_type) == ENUMERAL_TYPE); |
| |
| cst = build_int_cst (enum_type, value); |
| /* Note that gdb does not preserve the location of enum constants, |
| so we can't provide a decent location here. */ |
| decl = build_decl (BUILTINS_LOCATION, CONST_DECL, |
| get_identifier (name), enum_type); |
| DECL_INITIAL (decl) = cst; |
| pushdecl_safe (decl); |
| |
| cons = tree_cons (DECL_NAME (decl), cst, TYPE_VALUES (enum_type)); |
| TYPE_VALUES (enum_type) = cons; |
| |
| return 1; |
| } |
| |
| int |
| plugin_finish_enum_type (cc1_plugin::connection *, |
| gcc_type enum_type_in) |
| { |
| tree enum_type = convert_in (enum_type_in); |
| tree minnode, maxnode, iter; |
| |
| iter = TYPE_VALUES (enum_type); |
| minnode = maxnode = TREE_VALUE (iter); |
| for (iter = TREE_CHAIN (iter); |
| iter != NULL_TREE; |
| iter = TREE_CHAIN (iter)) |
| { |
| tree value = TREE_VALUE (iter); |
| if (tree_int_cst_lt (maxnode, value)) |
| maxnode = value; |
| if (tree_int_cst_lt (value, minnode)) |
| minnode = value; |
| } |
| TYPE_MIN_VALUE (enum_type) = minnode; |
| TYPE_MAX_VALUE (enum_type) = maxnode; |
| |
| layout_type (enum_type); |
| |
| return 1; |
| } |
| |
| gcc_type |
| plugin_build_function_type (cc1_plugin::connection *self, |
| gcc_type return_type_in, |
| const struct gcc_type_array *argument_types_in, |
| int is_varargs) |
| { |
| tree *argument_types; |
| tree return_type = convert_in (return_type_in); |
| tree result; |
| |
| argument_types = new tree[argument_types_in->n_elements]; |
| for (int i = 0; i < argument_types_in->n_elements; ++i) |
| argument_types[i] = convert_in (argument_types_in->elements[i]); |
| |
| if (is_varargs) |
| result = build_varargs_function_type_array (return_type, |
| argument_types_in->n_elements, |
| argument_types); |
| else |
| result = build_function_type_array (return_type, |
| argument_types_in->n_elements, |
| argument_types); |
| |
| delete[] argument_types; |
| |
| plugin_context *ctx = static_cast<plugin_context *> (self); |
| return convert_out (ctx->preserve (result)); |
| } |
| |
| /* Return a builtin type associated with BUILTIN_NAME. */ |
| |
| static tree |
| safe_lookup_builtin_type (const char *builtin_name) |
| { |
| tree result = NULL_TREE; |
| |
| if (!builtin_name) |
| return result; |
| |
| result = identifier_global_value (get_identifier (builtin_name)); |
| |
| if (!result) |
| return result; |
| |
| gcc_assert (TREE_CODE (result) == TYPE_DECL); |
| result = TREE_TYPE (result); |
| return result; |
| } |
| |
| static gcc_type |
| plugin_int_check (cc1_plugin::connection *self, |
| int is_unsigned, unsigned long size_in_bytes, |
| tree result) |
| { |
| if (result == NULL_TREE) |
| result = error_mark_node; |
| else |
| { |
| gcc_assert (!TYPE_UNSIGNED (result) == !is_unsigned); |
| gcc_assert (TREE_CODE (TYPE_SIZE (result)) == INTEGER_CST); |
| gcc_assert (TYPE_PRECISION (result) == BITS_PER_UNIT * size_in_bytes); |
| |
| plugin_context *ctx = static_cast<plugin_context *> (self); |
| ctx->preserve (result); |
| } |
| return convert_out (result); |
| } |
| |
| gcc_type |
| plugin_int_type_v0 (cc1_plugin::connection *self, |
| int is_unsigned, unsigned long size_in_bytes) |
| { |
| tree result = c_common_type_for_size (BITS_PER_UNIT * size_in_bytes, |
| is_unsigned); |
| |
| return plugin_int_check (self, is_unsigned, size_in_bytes, result); |
| } |
| |
| gcc_type |
| plugin_int_type (cc1_plugin::connection *self, |
| int is_unsigned, unsigned long size_in_bytes, |
| const char *builtin_name) |
| { |
| if (!builtin_name) |
| return plugin_int_type_v0 (self, is_unsigned, size_in_bytes); |
| |
| tree result = safe_lookup_builtin_type (builtin_name); |
| gcc_assert (!result || TREE_CODE (result) == INTEGER_TYPE); |
| |
| return plugin_int_check (self, is_unsigned, size_in_bytes, result); |
| } |
| |
| gcc_type |
| plugin_char_type (cc1_plugin::connection *) |
| { |
| return convert_out (char_type_node); |
| } |
| |
| gcc_type |
| plugin_float_type_v0 (cc1_plugin::connection *, |
| unsigned long size_in_bytes) |
| { |
| if (BITS_PER_UNIT * size_in_bytes == TYPE_PRECISION (float_type_node)) |
| return convert_out (float_type_node); |
| if (BITS_PER_UNIT * size_in_bytes == TYPE_PRECISION (double_type_node)) |
| return convert_out (double_type_node); |
| if (BITS_PER_UNIT * size_in_bytes == TYPE_PRECISION (long_double_type_node)) |
| return convert_out (long_double_type_node); |
| return convert_out (error_mark_node); |
| } |
| |
| gcc_type |
| plugin_float_type (cc1_plugin::connection *self, |
| unsigned long size_in_bytes, |
| const char *builtin_name) |
| { |
| if (!builtin_name) |
| return plugin_float_type_v0 (self, size_in_bytes); |
| |
| tree result = safe_lookup_builtin_type (builtin_name); |
| |
| if (!result) |
| return convert_out (error_mark_node); |
| |
| gcc_assert (TREE_CODE (result) == REAL_TYPE); |
| gcc_assert (BITS_PER_UNIT * size_in_bytes == TYPE_PRECISION (result)); |
| |
| return convert_out (result); |
| } |
| |
| gcc_type |
| plugin_void_type (cc1_plugin::connection *) |
| { |
| return convert_out (void_type_node); |
| } |
| |
| gcc_type |
| plugin_bool_type (cc1_plugin::connection *) |
| { |
| return convert_out (boolean_type_node); |
| } |
| |
| gcc_type |
| plugin_build_array_type (cc1_plugin::connection *self, |
| gcc_type element_type_in, int num_elements) |
| { |
| tree element_type = convert_in (element_type_in); |
| tree result; |
| |
| if (num_elements == -1) |
| result = build_array_type (element_type, NULL_TREE); |
| else |
| result = build_array_type_nelts (element_type, num_elements); |
| |
| plugin_context *ctx = static_cast<plugin_context *> (self); |
| return convert_out (ctx->preserve (result)); |
| } |
| |
| gcc_type |
| plugin_build_vla_array_type (cc1_plugin::connection *self, |
| gcc_type element_type_in, |
| const char *upper_bound_name) |
| { |
| tree element_type = convert_in (element_type_in); |
| tree upper_bound = lookup_name (get_identifier (upper_bound_name)); |
| tree range = build_index_type (upper_bound); |
| |
| tree result = build_array_type (element_type, range); |
| C_TYPE_VARIABLE_SIZE (result) = 1; |
| |
| plugin_context *ctx = static_cast<plugin_context *> (self); |
| return convert_out (ctx->preserve (result)); |
| } |
| |
| gcc_type |
| plugin_build_qualified_type (cc1_plugin::connection *, |
| gcc_type unqualified_type_in, |
| enum gcc_qualifiers qualifiers) |
| { |
| tree unqualified_type = convert_in (unqualified_type_in); |
| int quals = 0; |
| |
| if ((qualifiers & GCC_QUALIFIER_CONST) != 0) |
| quals |= TYPE_QUAL_CONST; |
| if ((qualifiers & GCC_QUALIFIER_VOLATILE) != 0) |
| quals |= TYPE_QUAL_VOLATILE; |
| if ((qualifiers & GCC_QUALIFIER_RESTRICT) != 0) |
| quals |= TYPE_QUAL_RESTRICT; |
| |
| return convert_out (build_qualified_type (unqualified_type, quals)); |
| } |
| |
| gcc_type |
| plugin_build_complex_type (cc1_plugin::connection *self, |
| gcc_type base_type) |
| { |
| plugin_context *ctx = static_cast<plugin_context *> (self); |
| return convert_out (ctx->preserve (build_complex_type (convert_in (base_type)))); |
| } |
| |
| gcc_type |
| plugin_build_vector_type (cc1_plugin::connection *self, |
| gcc_type base_type, int nunits) |
| { |
| plugin_context *ctx = static_cast<plugin_context *> (self); |
| return convert_out (ctx->preserve (build_vector_type (convert_in (base_type), |
| nunits))); |
| } |
| |
| int |
| plugin_build_constant (cc1_plugin::connection *self, gcc_type type_in, |
| const char *name, unsigned long value, |
| const char *filename, unsigned int line_number) |
| { |
| plugin_context *ctx = static_cast<plugin_context *> (self); |
| tree cst, decl; |
| tree type = convert_in (type_in); |
| |
| cst = build_int_cst (type, value); |
| decl = build_decl (ctx->get_location_t (filename, line_number), |
| CONST_DECL, get_identifier (name), type); |
| DECL_INITIAL (decl) = cst; |
| pushdecl_safe (decl); |
| |
| return 1; |
| } |
| |
| gcc_type |
| plugin_error (cc1_plugin::connection *, |
| const char *message) |
| { |
| error ("%s", message); |
| return convert_out (error_mark_node); |
| } |
| |
| |
| |
| // Perform GC marking. |
| |
| static void |
| gc_mark (void *, void *) |
| { |
| if (current_context != NULL) |
| current_context->mark (); |
| } |
| |
| #ifdef __GNUC__ |
| #pragma GCC visibility push(default) |
| #endif |
| |
| int |
| plugin_init (struct plugin_name_args *plugin_info, |
| struct plugin_gcc_version *) |
| { |
| long fd = -1; |
| for (int i = 0; i < plugin_info->argc; ++i) |
| { |
| if (strcmp (plugin_info->argv[i].key, "fd") == 0) |
| { |
| char *tail; |
| errno = 0; |
| fd = strtol (plugin_info->argv[i].value, &tail, 0); |
| if (*tail != '\0' || errno != 0) |
| fatal_error (input_location, |
| "%s: invalid file descriptor argument to plugin", |
| plugin_info->base_name); |
| break; |
| } |
| } |
| if (fd == -1) |
| fatal_error (input_location, |
| "%s: required plugin argument %<fd%> is missing", |
| plugin_info->base_name); |
| |
| current_context = new plugin_context (fd); |
| |
| // Handshake. |
| cc1_plugin::protocol_int version; |
| if (!current_context->require ('H') |
| || ! ::cc1_plugin::unmarshall (current_context, &version)) |
| fatal_error (input_location, |
| "%s: handshake failed", plugin_info->base_name); |
| if (version != GCC_C_FE_VERSION_1) |
| fatal_error (input_location, |
| "%s: unknown version in handshake", plugin_info->base_name); |
| |
| register_callback (plugin_info->base_name, PLUGIN_PRAGMAS, |
| plugin_init_extra_pragmas, NULL); |
| register_callback (plugin_info->base_name, PLUGIN_PRE_GENERICIZE, |
| rewrite_decls_to_addresses, NULL); |
| register_callback (plugin_info->base_name, PLUGIN_GGC_MARKING, |
| gc_mark, NULL); |
| |
| lang_hooks.print_error_function = plugin_print_error_function; |
| |
| #define GCC_METHOD0(R, N) \ |
| { \ |
| cc1_plugin::callback_ftype *fun \ |
| = cc1_plugin::callback<R, plugin_ ## N>; \ |
| current_context->add_callback (# N, fun); \ |
| } |
| #define GCC_METHOD1(R, N, A) \ |
| { \ |
| cc1_plugin::callback_ftype *fun \ |
| = cc1_plugin::callback<R, A, plugin_ ## N>; \ |
| current_context->add_callback (# N, fun); \ |
| } |
| #define GCC_METHOD2(R, N, A, B) \ |
| { \ |
| cc1_plugin::callback_ftype *fun \ |
| = cc1_plugin::callback<R, A, B, plugin_ ## N>; \ |
| current_context->add_callback (# N, fun); \ |
| } |
| #define GCC_METHOD3(R, N, A, B, C) \ |
| { \ |
| cc1_plugin::callback_ftype *fun \ |
| = cc1_plugin::callback<R, A, B, C, plugin_ ## N>; \ |
| current_context->add_callback (# N, fun); \ |
| } |
| #define GCC_METHOD4(R, N, A, B, C, D) \ |
| { \ |
| cc1_plugin::callback_ftype *fun \ |
| = cc1_plugin::callback<R, A, B, C, D, \ |
| plugin_ ## N>; \ |
| current_context->add_callback (# N, fun); \ |
| } |
| #define GCC_METHOD5(R, N, A, B, C, D, E) \ |
| { \ |
| cc1_plugin::callback_ftype *fun \ |
| = cc1_plugin::callback<R, A, B, C, D, E, \ |
| plugin_ ## N>; \ |
| current_context->add_callback (# N, fun); \ |
| } |
| #define GCC_METHOD7(R, N, A, B, C, D, E, F, G) \ |
| { \ |
| cc1_plugin::callback_ftype *fun \ |
| = cc1_plugin::callback<R, A, B, C, D, E, F, G, \ |
| plugin_ ## N>; \ |
| current_context->add_callback (# N, fun); \ |
| } |
| |
| #include "gcc-c-fe.def" |
| |
| #undef GCC_METHOD0 |
| #undef GCC_METHOD1 |
| #undef GCC_METHOD2 |
| #undef GCC_METHOD3 |
| #undef GCC_METHOD4 |
| #undef GCC_METHOD5 |
| #undef GCC_METHOD7 |
| |
| return 0; |
| } |