mirror of https://github.com/rusefi/ChibiOS.git
272 lines
6.9 KiB
C
272 lines
6.9 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011 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.c
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* @brief ChibiOS/RT Debug code.
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*
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* @addtogroup debug
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* @details Debug APIs and services:
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* - Runtime system state and call protocol check. The following
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* panic messages can be generated:
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* - SV#1, misplaced @p chSysDisable().
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* - SV#2, misplaced @p chSysSuspend()
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* - SV#3, misplaced @p chSysEnable().
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* - SV#4, misplaced @p chSysLock().
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* - SV#5, misplaced @p chSysUnlock().
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* - SV#6, misplaced @p chSysLockFromIsr().
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* - SV#7, misplaced @p chSysUnlockFromIsr().
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* - SV#8, misplaced @p CH_IRQ_PROLOGUE().
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* - SV#9, misplaced @p CH_IRQ_EPILOGUE().
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* - SV#10, misplaced I-class function.
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* - SV#11, misplaced S-class function.
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* .
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* - Trace buffer.
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* - Parameters check.
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* - Kernel assertions.
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* - Kernel panics.
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* .
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* @note Stack checks are not implemented in this module but in the port
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* layer in an architecture-dependent way.
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* @{
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*/
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#include "ch.h"
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/*===========================================================================*/
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/* System state checker related code and variables. */
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/*===========================================================================*/
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#if CH_DBG_SYSTEM_STATE_CHECK || defined(__DOXYGEN__)
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/**
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* @brief ISR nesting level.
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*/
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cnt_t dbg_isr_cnt;
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/**
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* @brief Lock nesting level.
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*/
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cnt_t dbg_lock_cnt;
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/**
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* @brief Guard code for @p chSysDisable().
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*
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* @notapi
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*/
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void dbg_check_disable(void) {
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if ((dbg_isr_cnt != 0) || (dbg_lock_cnt != 0))
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chDbgPanic("SV#1");
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}
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/**
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* @brief Guard code for @p chSysSuspend().
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*
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* @notapi
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*/
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void dbg_check_suspend(void) {
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if ((dbg_isr_cnt != 0) || (dbg_lock_cnt != 0))
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chDbgPanic("SV#2");
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}
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/**
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* @brief Guard code for @p chSysEnable().
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*
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* @notapi
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*/
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void dbg_check_enable(void) {
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if ((dbg_isr_cnt != 0) || (dbg_lock_cnt != 0))
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chDbgPanic("SV#3");
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}
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/**
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* @brief Guard code for @p chSysLock().
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*
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* @notapi
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*/
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void dbg_check_lock(void) {
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if ((dbg_isr_cnt != 0) || (dbg_lock_cnt != 0))
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chDbgPanic("SV#4");
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dbg_lock_cnt = 1;
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}
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/**
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* @brief Guard code for @p chSysUnlock().
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*
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* @notapi
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*/
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void dbg_check_unlock(void) {
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if ((dbg_isr_cnt != 0) || (dbg_lock_cnt <= 0))
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chDbgPanic("SV#5");
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dbg_lock_cnt = 0;
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}
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/**
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* @brief Guard code for @p chSysLockFromIsr().
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*
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* @notapi
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*/
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void dbg_check_lock_from_isr(void) {
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if ((dbg_isr_cnt <= 0) || (dbg_lock_cnt != 0))
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chDbgPanic("SV#6");
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dbg_lock_cnt = 1;
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}
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/**
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* @brief Guard code for @p chSysUnlockFromIsr().
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*
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* @notapi
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*/
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void dbg_check_unlock_from_isr(void) {
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if ((dbg_isr_cnt <= 0) || (dbg_lock_cnt <= 0))
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chDbgPanic("SV#7");
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dbg_lock_cnt = 0;
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}
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/**
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* @brief Guard code for @p CH_IRQ_PROLOGUE().
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*
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* @notapi
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*/
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void dbg_check_enter_isr(void) {
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port_lock_from_isr();
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if ((dbg_isr_cnt < 0) || (dbg_lock_cnt != 0))
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chDbgPanic("SV#8");
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dbg_isr_cnt++;
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port_unlock_from_isr();
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}
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/**
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* @brief Guard code for @p CH_IRQ_EPILOGUE().
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*
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* @notapi
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*/
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void dbg_check_leave_isr(void) {
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port_lock_from_isr();
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if ((dbg_isr_cnt <= 0) || (dbg_lock_cnt != 0))
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chDbgPanic("SV#9");
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dbg_isr_cnt--;
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port_unlock_from_isr();
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}
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/**
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* @brief I-class functions context check.
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* @details Verifies that the system is in an appropriate state for invoking
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* an I-class API function. A panic is generated if the state is
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* not compatible.
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*
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* @api
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*/
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void chDbgCheckClassI(void) {
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if ((dbg_isr_cnt < 0) || (dbg_lock_cnt <= 0))
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chDbgPanic("SV#10");
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}
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/**
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* @brief S-class functions context check.
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* @details Verifies that the system is in an appropriate state for invoking
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* an S-class API function. A panic is generated if the state is
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* not compatible.
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*
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* @api
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*/
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void chDbgCheckClassS(void) {
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if ((dbg_isr_cnt != 0) || (dbg_lock_cnt <= 0))
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chDbgPanic("SV#11");
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}
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#endif /* CH_DBG_SYSTEM_STATE_CHECK */
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/*===========================================================================*/
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/* Trace related code and variables. */
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/*===========================================================================*/
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#if CH_DBG_ENABLE_TRACE || defined(__DOXYGEN__)
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/**
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* @brief Public trace buffer.
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*/
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ch_trace_buffer_t dbg_trace_buffer;
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/**
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* @brief Trace circular buffer subsystem initialization.
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* @note Internal use only.
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*/
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void _trace_init(void) {
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dbg_trace_buffer.tb_size = CH_TRACE_BUFFER_SIZE;
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dbg_trace_buffer.tb_ptr = &dbg_trace_buffer.tb_buffer[0];
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}
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/**
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* @brief Inserts in the circular debug trace buffer a context switch record.
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*
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* @param[in] otp the thread being switched out
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*
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* @notapi
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*/
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void dbg_trace(Thread *otp) {
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dbg_trace_buffer.tb_ptr->se_time = chTimeNow();
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dbg_trace_buffer.tb_ptr->se_tp = currp;
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dbg_trace_buffer.tb_ptr->se_wtobjp = otp->p_u.wtobjp;
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dbg_trace_buffer.tb_ptr->se_state = (uint8_t)otp->p_state;
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if (++dbg_trace_buffer.tb_ptr >=
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&dbg_trace_buffer.tb_buffer[CH_TRACE_BUFFER_SIZE])
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dbg_trace_buffer.tb_ptr = &dbg_trace_buffer.tb_buffer[0];
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}
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#endif /* CH_DBG_ENABLE_TRACE */
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/*===========================================================================*/
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/* Panic related code and variables. */
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/*===========================================================================*/
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#if CH_DBG_ENABLED || defined(__DOXYGEN__)
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/**
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* @brief Pointer to the panic message.
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* @details This pointer is meant to be accessed through the debugger, it is
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* written once and then the system is halted.
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*/
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char *dbg_panic_msg;
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/**
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* @brief Prints a panic message on the console and then halts the system.
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*
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* @param[in] msg the pointer to the panic message string
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*/
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void chDbgPanic(char *msg) {
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dbg_panic_msg = msg;
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chSysHalt();
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}
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#endif /* CH_DBG_ENABLED */
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/** @} */
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