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/*

 * Debug/performance measurements for mm0

 *

 * Copyright (C) 2010 B Labs Ltd.

 */

#ifndef __ARCH_DEBUG_H__

#define __ARCH_DEBUG_H__

#if !defined(CONFIG_DEBUG_PERFMON_USER)

#include <l4lib/types.h>

/* Common empty definitions for all arches */

static inline u32 perfmon_read_cyccnt() { return 0; }

static inline void perfmon_reset_start_cyccnt() { }

static inline u32 perfmon_read_reset_start_cyccnt() { return 0; }

#define debug_record_cycles(str)

#else /* End of CONFIG_DEBUG_PERFMON_USER */

/* Architecture specific perfmon cycle counting */

#include L4LIB_INC_SUBARCH(perfmon.h)

extern u64 perfmon_total_cycles;

extern u64 current_cycles;

/*

 * This is for Cortex-A9 running at 400Mhz. 25 / 100000 is

 * a rewriting of 2.5 nanosec / 1,000,000

 */

#define debug_record_cycles(str)                        \

{                                                       \

        current_cycles = perfmon_read_cyccnt();         \

        perfmon_total_cycles += current_cycles;         \

        printf("%s: took %llu milliseconds\n", str,     \

               current_cycles * 64 * 25 / 100000);      \

        perfmon_reset_start_cyccnt();                   \

}

#endif /* End of !CONFIG_DEBUG_PERFMON_USER */

#endif /* __ARCH_DEBUG_H__ */