embox

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/**
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 * @file
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 * @brief
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 *
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 * @author  Anton Kozlov
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 * @date    05.02.2014
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 */
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#include <stdbool.h>
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#include <errno.h>
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#include <debug/symbol.h>
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#include <lib/libds/bitmap.h>
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#include <kernel/printk.h>
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#include <embox/unit.h>
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#include "cyg_profile.h"
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extern const struct symbol __symbol_table[];
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extern const size_t __symbol_table_size;
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EMBOX_UNIT_INIT(coverage_init);
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#define COVERAGE_TABLE_SIZE OPTION_GET(NUMBER,coverage_table_size)
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static BITMAP_DECL(coverage_table_bitmap, COVERAGE_TABLE_SIZE);
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void __coverage_func_enter(void *func, void *caller) {
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	const struct symbol *sym;
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	int sym_pos;
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	sym = symbol_lookup(func);
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	if (!sym)
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		return;
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	sym_pos = sym - __symbol_table;
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	if (!(0 <= sym_pos && sym_pos < __symbol_table_size))
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		return;
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	bitmap_set_bit(coverage_table_bitmap, sym_pos);
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}
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void __coverage_func_exit(void *func, void *caller) {
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}
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int coverage_getstat(const struct symbol **sym_table, const unsigned long **cov_bitmap) {
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	*sym_table = __symbol_table;
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	*cov_bitmap = coverage_table_bitmap;
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	return __symbol_table_size;
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}
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static int coverage_init(void) {
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	if (COVERAGE_TABLE_SIZE < __symbol_table_size) {
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		printk("\n[%s]: coverage_table_size too small, "
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				"try to increase it [%zu; required at least %zu]\n",
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				__func__, (size_t)COVERAGE_TABLE_SIZE, __symbol_table_size);
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		return -ENOMEM;
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	}
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	ARRAY_SPREAD_DECLARE(cyg_func, __cyg_handler_enter_array);
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	ARRAY_SPREAD_DECLARE(cyg_func, __cyg_handler_exit_array);
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	ARRAY_SPREAD_ADD(__cyg_handler_enter_array, &__coverage_func_enter);
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	ARRAY_SPREAD_ADD(__cyg_handler_exit_array, &__coverage_func_exit);
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	return 0;
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}
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