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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file chdebug.h
* @brief Debug macros and structures.
*
* @addtogroup debug
* @{
*/
#ifndef _CHDEBUG_H_
#define _CHDEBUG_H_
#if CH_DBG_ENABLE_ASSERTS || CH_DBG_ENABLE_CHECKS || \
CH_DBG_ENABLE_STACK_CHECK || CH_DBG_SYSTEM_STATE_CHECK
#define CH_DBG_ENABLED TRUE
#else
#define CH_DBG_ENABLED FALSE
#endif
#define __QUOTE_THIS(p) #p
/*===========================================================================*/
/**
* @name Debug related settings
* @{
*/
/*===========================================================================*/
/**
* @brief Trace buffer entries.
*/
#ifndef CH_TRACE_BUFFER_SIZE
#define CH_TRACE_BUFFER_SIZE 64
#endif
/**
* @brief Fill value for thread stack area in debug mode.
*/
#ifndef CH_STACK_FILL_VALUE
#define CH_STACK_FILL_VALUE 0x55
#endif
/**
* @brief Fill value for thread area in debug mode.
* @note The chosen default value is 0xFF in order to make evident which
* thread fields were not initialized when inspecting the memory with
* a debugger. A uninitialized field is not an error in itself but it
* better to know it.
*/
#ifndef CH_THREAD_FILL_VALUE
#define CH_THREAD_FILL_VALUE 0xFF
#endif
/** @} */
/*===========================================================================*/
/* System state checker related code and variables. */
/*===========================================================================*/
#if !CH_DBG_SYSTEM_STATE_CHECK
#define dbg_enter_lock()
#define dbg_leave_lock()
#define dbg_check_disable()
#define dbg_check_suspend()
#define dbg_check_enable()
#define dbg_check_lock()
#define dbg_check_unlock()
#define dbg_check_lock_from_isr()
#define dbg_check_unlock_from_isr()
#define dbg_check_enter_isr()
#define dbg_check_leave_isr()
#define chDbgCheckClassI();
#define chDbgCheckClassS();
#else
#define dbg_enter_lock() (dbg_lock_cnt = 1)
#define dbg_leave_lock() (dbg_lock_cnt = 0)
#endif
/*===========================================================================*/
/* Trace related structures and macros. */
/*===========================================================================*/
#if CH_DBG_ENABLE_TRACE || defined(__DOXYGEN__)
/**
* @brief Trace buffer record.
*/
typedef struct {
systime_t se_time; /**< @brief Time of the switch event. */
Thread *se_tp; /**< @brief Switched in thread. */
void *se_wtobjp; /**< @brief Object where going to sleep.*/
uint8_t se_state; /**< @brief Switched out thread state. */
} ch_swc_event_t;
/**
* @brief Trace buffer header.
*/
typedef struct {
unsigned tb_size; /**< @brief Trace buffer size (entries).*/
ch_swc_event_t *tb_ptr; /**< @brief Pointer to the buffer front.*/
/** @brief Ring buffer.*/
ch_swc_event_t tb_buffer[CH_TRACE_BUFFER_SIZE];
} ch_trace_buffer_t;
#if !defined(__DOXYGEN__)
extern ch_trace_buffer_t dbg_trace_buffer;
#endif
#endif /* CH_DBG_ENABLE_TRACE */
#if !CH_DBG_ENABLE_TRACE
/* When the trace feature is disabled this function is replaced by an empty
macro.*/
#define dbg_trace(otp)
#endif
/*===========================================================================*/
/* Parameters checking related macros. */
/*===========================================================================*/
#if CH_DBG_ENABLE_CHECKS || defined(__DOXYGEN__)
/**
* @name Macro Functions
* @{
*/
/**
* @brief Function parameter check.
* @details If the condition check fails then the kernel panics and halts.
* @note The condition is tested only if the @p CH_DBG_ENABLE_CHECKS switch
* is specified in @p chconf.h else the macro does nothing.
*
* @param[in] c the condition to be verified to be true
* @param[in] func the undecorated function name
*
* @api
*/
#if !defined(chDbgCheck)
#define chDbgCheck(c, func) { \
if (!(c)) \
chDbgPanic(__QUOTE_THIS(func)"()"); \
}
#endif /* !defined(chDbgCheck) */
/** @} */
#else /* !CH_DBG_ENABLE_CHECKS */
#define chDbgCheck(c, func) { \
(void)(c), (void)__QUOTE_THIS(func)"()"; \
}
#endif /* !CH_DBG_ENABLE_CHECKS */
/*===========================================================================*/
/* Assertions related macros. */
/*===========================================================================*/
#if CH_DBG_ENABLE_ASSERTS || defined(__DOXYGEN__)
/**
* @name Macro Functions
* @{
*/
/**
* @brief Condition assertion.
* @details If the condition check fails then the kernel panics with the
* specified message and halts.
* @note The condition is tested only if the @p CH_DBG_ENABLE_ASSERTS switch
* is specified in @p chconf.h else the macro does nothing.
* @note The convention for the message is the following:<br>
* @<function_name@>(), #@<assert_number@>
* @note The remark string is not currently used except for putting a
* comment in the code about the assertion.
*
* @param[in] c the condition to be verified to be true
* @param[in] m the text message
* @param[in] r a remark string
*
* @api
*/
#if !defined(chDbgAssert)
#define chDbgAssert(c, m, r) { \
if (!(c)) \
chDbgPanic(m); \
}
#endif /* !defined(chDbgAssert) */
/** @} */
#else /* !CH_DBG_ENABLE_ASSERTS */
#define chDbgAssert(c, m, r) {(void)(c);}
#endif /* !CH_DBG_ENABLE_ASSERTS */
/*===========================================================================*/
/* Panic related macros. */
/*===========================================================================*/
#if !CH_DBG_ENABLED
/* When the debug features are disabled this function is replaced by an empty
macro.*/
#define chDbgPanic(msg) {}
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if CH_DBG_SYSTEM_STATE_CHECK
extern cnt_t dbg_isr_cnt;
extern cnt_t dbg_lock_cnt;
void dbg_check_disable(void);
void dbg_check_suspend(void);
void dbg_check_enable(void);
void dbg_check_lock(void);
void dbg_check_unlock(void);
void dbg_check_lock_from_isr(void);
void dbg_check_unlock_from_isr(void);
void dbg_check_enter_isr(void);
void dbg_check_leave_isr(void);
void chDbgCheckClassI(void);
void chDbgCheckClassS(void);
#endif
#if CH_DBG_ENABLE_TRACE || defined(__DOXYGEN__)
void _trace_init(void);
void dbg_trace(Thread *otp);
#endif
#if CH_DBG_ENABLED
extern const char *dbg_panic_msg;
void chDbgPanic(const char *msg);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _CHDEBUG_H_ */
/** @} */
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