/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Profiling infrastructure declarations.
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*
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* This file is based on gcc-internal definitions. Data structures are
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* defined to be compatible with gcc counterparts. For a better
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* understanding, refer to gcc source: gcc/gcov-io.h.
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*
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* Copyright IBM Corp. 2009
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* Author(s): Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
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*
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* Uses gcc-internal data definitions.
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*/
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#ifndef GCOV_H
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#define GCOV_H GCOV_H
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#include <linux/module.h>
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#include <linux/types.h>
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/*
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* Profiling data types used for gcc 3.4 and above - these are defined by
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* gcc and need to be kept as close to the original definition as possible to
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* remain compatible.
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*/
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#define GCOV_DATA_MAGIC ((unsigned int) 0x67636461)
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#define GCOV_TAG_FUNCTION ((unsigned int) 0x01000000)
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#define GCOV_TAG_COUNTER_BASE ((unsigned int) 0x01a10000)
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#define GCOV_TAG_FOR_COUNTER(count) \
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(GCOV_TAG_COUNTER_BASE + ((unsigned int) (count) << 17))
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#if BITS_PER_LONG >= 64
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typedef long gcov_type;
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#else
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typedef long long gcov_type;
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#endif
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/* Opaque gcov_info. The gcov structures can change as for example in gcc 4.7 so
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* we cannot use full definition here and they need to be placed in gcc specific
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* implementation of gcov. This also means no direct access to the members in
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* generic code and usage of the interface below.*/
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struct gcov_info;
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/* Interface to access gcov_info data */
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const char *gcov_info_filename(struct gcov_info *info);
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unsigned int gcov_info_version(struct gcov_info *info);
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struct gcov_info *gcov_info_next(struct gcov_info *info);
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void gcov_info_link(struct gcov_info *info);
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void gcov_info_unlink(struct gcov_info *prev, struct gcov_info *info);
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bool gcov_info_within_module(struct gcov_info *info, struct module *mod);
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/* Base interface. */
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enum gcov_action {
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GCOV_ADD,
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GCOV_REMOVE,
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};
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void gcov_event(enum gcov_action action, struct gcov_info *info);
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void gcov_enable_events(void);
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/* Iterator control. */
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struct seq_file;
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struct gcov_iterator;
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struct gcov_iterator *gcov_iter_new(struct gcov_info *info);
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void gcov_iter_free(struct gcov_iterator *iter);
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void gcov_iter_start(struct gcov_iterator *iter);
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int gcov_iter_next(struct gcov_iterator *iter);
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int gcov_iter_write(struct gcov_iterator *iter, struct seq_file *seq);
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struct gcov_info *gcov_iter_get_info(struct gcov_iterator *iter);
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/* gcov_info control. */
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void gcov_info_reset(struct gcov_info *info);
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int gcov_info_is_compatible(struct gcov_info *info1, struct gcov_info *info2);
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void gcov_info_add(struct gcov_info *dest, struct gcov_info *source);
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struct gcov_info *gcov_info_dup(struct gcov_info *info);
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void gcov_info_free(struct gcov_info *info);
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struct gcov_link {
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enum {
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OBJ_TREE,
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SRC_TREE,
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} dir;
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const char *ext;
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};
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extern const struct gcov_link gcov_link[];
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extern int gcov_events_enabled;
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extern struct mutex gcov_lock;
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#endif /* GCOV_H */
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