122 lines
2.8 KiB
C++
122 lines
2.8 KiB
C++
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/* Generic plugin context
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Copyright (C) 2020 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef CC1_PLUGIN_CONTEXT_HH
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#define CC1_PLUGIN_CONTEXT_HH
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#include "system.h"
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#include "coretypes.h"
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#include "tree.h"
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#include "connection.hh"
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namespace cc1_plugin
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{
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static inline unsigned long long
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convert_out (tree t)
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{
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return (unsigned long long) (uintptr_t) t;
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}
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static inline tree
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convert_in (unsigned long long v)
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{
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return (tree) (uintptr_t) v;
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}
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struct decl_addr_value
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{
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tree decl;
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tree address;
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};
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struct decl_addr_hasher : free_ptr_hash<decl_addr_value>
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{
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static hashval_t hash (const decl_addr_value *e)
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{
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return DECL_UID (e->decl);
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}
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static bool equal (const decl_addr_value *p1,
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const decl_addr_value *p2)
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{
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return p1->decl == p2->decl;
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}
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};
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struct string_hasher : nofree_ptr_hash<const char>
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{
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static inline hashval_t hash (const char *s)
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{
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return htab_hash_string (s);
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}
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static inline bool equal (const char *p1, const char *p2)
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{
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return strcmp (p1, p2) == 0;
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}
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};
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struct plugin_context : public cc1_plugin::connection
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{
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plugin_context (int fd)
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: cc1_plugin::connection (fd),
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address_map (30),
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preserved (30),
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file_names (30)
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{
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}
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// Map decls to addresses.
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hash_table<decl_addr_hasher> address_map;
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// A collection of trees that are preserved for the GC.
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hash_table< nofree_ptr_hash<tree_node> > preserved;
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// File name cache.
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hash_table<string_hasher> file_names;
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// Perform GC marking.
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void mark ();
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// Preserve a tree during the plugin's operation.
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tree preserve (tree t)
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{
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tree_node **slot = preserved.find_slot (t, INSERT);
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*slot = t;
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return t;
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}
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location_t get_location_t (const char *filename,
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unsigned int line_number);
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private:
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// Add a file name to FILE_NAMES and return the canonical copy.
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const char *intern_filename (const char *filename);
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};
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extern plugin_context *current_context;
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void generic_plugin_init (struct plugin_name_args *plugin_info,
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unsigned int version);
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}
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#endif // CC1_PLUGIN_CONTEXT_HH
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