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85 lines
2.6 KiB
85 lines
2.6 KiB
/* 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 <[email protected]> |
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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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size_t convert_to_gcda(char *buffer, struct gcov_info *info); |
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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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/* writing helpers */ |
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size_t store_gcov_u32(void *buffer, size_t off, u32 v); |
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size_t store_gcov_u64(void *buffer, size_t off, u64 v); |
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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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