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06248232 | 1 | /* Generic plugin context |
7adcbafe | 2 | Copyright (C) 2020-2022 Free Software Foundation, Inc. |
06248232 TT |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GCC; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #ifndef CC1_PLUGIN_CONTEXT_HH | |
21 | #define CC1_PLUGIN_CONTEXT_HH | |
22 | ||
23 | #include "system.h" | |
24 | #include "coretypes.h" | |
25 | #include "tree.h" | |
26 | ||
27 | #include "connection.hh" | |
28 | ||
29 | namespace cc1_plugin | |
30 | { | |
31 | static inline unsigned long long | |
32 | convert_out (tree t) | |
33 | { | |
34 | return (unsigned long long) (uintptr_t) t; | |
35 | } | |
36 | ||
37 | static inline tree | |
38 | convert_in (unsigned long long v) | |
39 | { | |
40 | return (tree) (uintptr_t) v; | |
41 | } | |
42 | ||
43 | struct decl_addr_value | |
44 | { | |
45 | tree decl; | |
46 | tree address; | |
47 | }; | |
48 | ||
49 | struct decl_addr_hasher : free_ptr_hash<decl_addr_value> | |
50 | { | |
51 | static hashval_t hash (const decl_addr_value *e) | |
52 | { | |
53 | return DECL_UID (e->decl); | |
54 | } | |
55 | ||
56 | static bool equal (const decl_addr_value *p1, | |
57 | const decl_addr_value *p2) | |
58 | { | |
59 | return p1->decl == p2->decl; | |
60 | } | |
61 | }; | |
62 | ||
63 | struct string_hasher : nofree_ptr_hash<const char> | |
64 | { | |
65 | static inline hashval_t hash (const char *s) | |
66 | { | |
67 | return htab_hash_string (s); | |
68 | } | |
69 | ||
70 | static inline bool equal (const char *p1, const char *p2) | |
71 | { | |
72 | return strcmp (p1, p2) == 0; | |
73 | } | |
74 | }; | |
75 | ||
76 | struct plugin_context : public cc1_plugin::connection | |
77 | { | |
78 | plugin_context (int fd) | |
79 | : cc1_plugin::connection (fd), | |
80 | address_map (30), | |
81 | preserved (30), | |
82 | file_names (30) | |
83 | { | |
84 | } | |
85 | ||
86 | // Map decls to addresses. | |
87 | hash_table<decl_addr_hasher> address_map; | |
88 | ||
89 | // A collection of trees that are preserved for the GC. | |
90 | hash_table< nofree_ptr_hash<tree_node> > preserved; | |
91 | ||
92 | // File name cache. | |
93 | hash_table<string_hasher> file_names; | |
94 | ||
95 | // Perform GC marking. | |
96 | void mark (); | |
97 | ||
98 | // Preserve a tree during the plugin's operation. | |
99 | tree preserve (tree t) | |
100 | { | |
101 | tree_node **slot = preserved.find_slot (t, INSERT); | |
102 | *slot = t; | |
103 | return t; | |
104 | } | |
105 | ||
106 | location_t get_location_t (const char *filename, | |
107 | unsigned int line_number); | |
108 | ||
109 | private: | |
110 | ||
111 | // Add a file name to FILE_NAMES and return the canonical copy. | |
112 | const char *intern_filename (const char *filename); | |
113 | }; | |
114 | ||
115 | extern plugin_context *current_context; | |
116 | ||
117 | void generic_plugin_init (struct plugin_name_args *plugin_info, | |
118 | unsigned int version); | |
119 | } | |
120 | ||
121 | #endif // CC1_PLUGIN_CONTEXT_HH |