168 lines
5.7 KiB
C
168 lines
5.7 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file chdebug.h
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* @brief Debug macros and structures.
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*
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* @addtogroup debug
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* @{
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*/
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#ifndef _CHDEBUG_H_
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#define _CHDEBUG_H_
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/**
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* @brief Trace buffer entries.
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*/
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#ifndef TRACE_BUFFER_SIZE
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#define TRACE_BUFFER_SIZE 64
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#endif
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/**
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* @brief Fill value for thread stack area in debug mode.
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*/
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#ifndef STACK_FILL_VALUE
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#define STACK_FILL_VALUE 0x55
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#endif
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/**
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* @brief Fill value for thread area in debug mode.
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* @note The chosen default value is 0xFF in order to make evident which
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* thread fields were not initialized when inspecting the memory with
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* a debugger. A uninitialized field is not an error in itself but it
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* better to know it.
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*/
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#ifndef THREAD_FILL_VALUE
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#define THREAD_FILL_VALUE 0xFF
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#endif
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#if CH_DBG_ENABLE_TRACE || defined(__DOXYGEN__)
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/**
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* @brief Trace buffer record.
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*/
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typedef struct {
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void *cse_wtobjp; /**< @brief Object where going to
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sleep. */
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systime_t cse_time; /**< @brief Time of the switch
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event. */
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uint16_t cse_state: 4; /**< @brief Switched out thread
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state. */
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uint16_t cse_tid: 12; /**< @brief Switched in thread id. */
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} CtxSwcEvent;
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/**
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* @brief Trace buffer header.
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*/
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typedef struct {
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unsigned tb_size; /**< @brief Trace buffer size
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(entries). */
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CtxSwcEvent *tb_ptr; /**< @brief Pointer to the ring buffer
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front. */
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/** @brief Ring buffer.*/
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CtxSwcEvent tb_buffer[TRACE_BUFFER_SIZE];
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} TraceBuffer;
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#endif /* CH_DBG_ENABLE_TRACE */
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#define __QUOTE_THIS(p) #p
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#if CH_DBG_ENABLE_CHECKS || defined(__DOXYGEN__)
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/**
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* @brief Function parameter check.
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* @details If the condition check fails then the kernel panics and halts.
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* @note The condition is tested only if the @p CH_DBG_ENABLE_CHECKS switch
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* is specified in @p chconf.h else the macro does nothing.
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*
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* @param[in] c the condition to be verified to be true
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* @param[in] func the undecorated function name
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*
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* @api
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*/
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#define chDbgCheck(c, func) { \
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if (!(c)) \
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chDbgPanic(__QUOTE_THIS(func)"(), line "__QUOTE_THIS(__LINE__)); \
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}
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#else /* !CH_DBG_ENABLE_CHECKS */
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#define chDbgCheck(c, func) { \
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(void)(c), (void)__QUOTE_THIS(func)"(), line "__QUOTE_THIS(__LINE__); \
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}
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#endif /* !CH_DBG_ENABLE_CHECKS */
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#if CH_DBG_ENABLE_ASSERTS || defined(__DOXYGEN__)
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/**
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* @brief Condition assertion.
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* @details If the condition check fails then the kernel panics with the
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* specified message and halts.
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* @note The condition is tested only if the @p CH_DBG_ENABLE_ASSERTS switch
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* is specified in @p chconf.h else the macro does nothing.
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* @note The convention for the message is the following:<br>
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* @<function_name@>(), #@<assert_number@>
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* @note The remark string is not currently used except for putting a
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* comment in the code about the assertion.
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*
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* @param[in] c the condition to be verified to be true
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* @param[in] m the text message
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* @param[in] r a remark string
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*
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* @api
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*/
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#define chDbgAssert(c, m, r) { \
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if (!(c)) \
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chDbgPanic(m); \
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}
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#else /* !CH_DBG_ENABLE_ASSERTS */
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#define chDbgAssert(c, m, r) {(void)(c);}
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#endif /* !CH_DBG_ENABLE_ASSERTS */
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#if !(CH_DBG_ENABLE_ASSERTS || \
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CH_DBG_ENABLE_CHECKS || \
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CH_DBG_ENABLE_STACK_CHECK)
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/* When the debug features are disabled this function is replaced by an empty
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macro.*/
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#define chDbgPanic(msg) {}
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#endif
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#if !CH_DBG_ENABLE_TRACE
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/* When the trace feature is disabled this function is replaced by an empty
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macro.*/
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#define chDbgTrace(otp) {}
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#endif
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#if !defined(__DOXYGEN__)
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if CH_DBG_ENABLE_TRACE || defined(__DOXYGEN__)
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extern TraceBuffer trace_buffer;
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void trace_init(void);
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void chDbgTrace(Thread *otp);
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#endif
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#if CH_DBG_ENABLE_ASSERTS || CH_DBG_ENABLE_CHECKS || CH_DBG_ENABLE_STACK_CHECK
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extern char *panic_msg;
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void chDbgPanic(char *msg);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* !defined(__DOXYGEN__) */
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#endif /* _CHDEBUG_H_ */
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/** @} */
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