| 1 | /* Support for plugin-supplied behaviors of known functions. |
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| 2 | Copyright (C) 2022-2024 Free Software Foundation, Inc. |
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| 3 | Contributed by David Malcolm <dmalcolm@redhat.com>. |
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| 4 | |
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| 5 | This file is part of GCC. |
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| 6 | |
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| 7 | GCC is free software; you can redistribute it and/or modify it |
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| 8 | under the terms of the GNU General Public License as published by |
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| 9 | the Free Software Foundation; either version 3, or (at your option) |
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| 10 | any later version. |
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| 11 | |
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| 12 | GCC is distributed in the hope that it will be useful, but |
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| 13 | WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | General Public License for more details. |
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| 16 | |
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| 17 | You should have received a copy of the GNU General Public License |
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| 18 | along with GCC; see the file COPYING3. If not see |
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| 19 | <http://www.gnu.org/licenses/>. */ |
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| 20 | |
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| 21 | #ifndef GCC_ANALYZER_KNOWN_FUNCTION_MANAGER_H |
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| 22 | #define GCC_ANALYZER_KNOWN_FUNCTION_MANAGER_H |
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| 23 | |
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| 24 | #include "analyzer/analyzer-logging.h" |
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| 25 | |
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| 26 | namespace ana { |
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| 27 | |
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| 28 | /* Instances of known_function are registered with the known_function_manager |
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| 29 | when the analyzer starts. |
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| 30 | |
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| 31 | The known_function_manager has responsibility for determining which |
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| 32 | known_function instance (if any) is relevant at a call site, by checking |
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| 33 | name or id, and by calling known_function::matches_call_types_p to ensure |
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| 34 | that the known_function's preconditions hold (typically assumptions about |
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| 35 | types e.g. that "has 3 args, and that arg 0 is of pointer type"). |
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| 36 | |
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| 37 | The known_function subclasses themselves have responsibility for |
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| 38 | determining the outcome(s) of the call. */ |
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| 39 | |
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| 40 | class known_function_manager : public log_user |
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| 41 | { |
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| 42 | public: |
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| 43 | known_function_manager (logger *logger); |
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| 44 | ~known_function_manager (); |
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| 45 | |
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| 46 | void add (const char *name, std::unique_ptr<known_function> kf); |
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| 47 | void add (enum built_in_function name, std::unique_ptr<known_function> kf); |
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| 48 | void add (enum internal_fn ifn, std::unique_ptr<known_function> kf); |
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| 49 | |
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| 50 | const known_function *get_match (tree fndecl, const call_details &cd) const; |
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| 51 | const known_function *get_internal_fn (enum internal_fn) const; |
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| 52 | |
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| 53 | private: |
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| 54 | DISABLE_COPY_AND_ASSIGN (known_function_manager); |
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| 55 | |
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| 56 | const known_function *get_normal_builtin (enum built_in_function name) const; |
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| 57 | const known_function * |
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| 58 | get_normal_builtin (const builtin_known_function *builtin_kf) const; |
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| 59 | const known_function *get_by_identifier (tree identifier) const; |
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| 60 | |
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| 61 | /* Map from identifier to known_function instance. |
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| 62 | Has ownership of the latter. */ |
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| 63 | hash_map<tree, known_function *> m_map_id_to_kf; |
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| 64 | |
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| 65 | /* Array of known builtins. */ |
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| 66 | known_function *m_combined_fns_arr[CFN_LAST]; |
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| 67 | }; |
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| 68 | |
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| 69 | extern std::unique_ptr<known_function> make_kf_strlen (); |
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| 70 | |
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| 71 | } // namespace ana |
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| 72 | |
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| 73 | #endif /* GCC_ANALYZER_KNOWN_FUNCTION_MANAGER_H */ |
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| 74 | |
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