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authorgdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>2013-08-10 14:51:16 +0000
committergdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4>2013-08-10 14:51:16 +0000
commita1435e018bfc9919cb76b1356509ecc883767fb4 (patch)
treeb82f74e9eee194c8b04ba4a0dd0b88810813caf8 /os/rt/src/chdebug.c
parenteb7a1a15b23341693864c6fc13ac5eab5c1d6122 (diff)
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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6123 35acf78f-673a-0410-8e92-d51de3d6d3f4
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diff --git a/os/rt/src/chdebug.c b/os/rt/src/chdebug.c
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+/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+ 2011,2012,2013 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.c
+ * @brief ChibiOS/RT Debug code.
+ *
+ * @addtogroup debug
+ * @details Debug APIs and services:
+ * - Runtime system state and call protocol check. The following
+ * panic messages can be generated:
+ * - SV#1, misplaced @p chSysDisable().
+ * - SV#2, misplaced @p chSysSuspend()
+ * - SV#3, misplaced @p chSysEnable().
+ * - SV#4, misplaced @p chSysLock().
+ * - SV#5, misplaced @p chSysUnlock().
+ * - SV#6, misplaced @p chSysLockFromIsr().
+ * - SV#7, misplaced @p chSysUnlockFromIsr().
+ * - SV#8, misplaced @p CH_IRQ_PROLOGUE().
+ * - SV#9, misplaced @p CH_IRQ_EPILOGUE().
+ * - SV#10, misplaced I-class function.
+ * - SV#11, misplaced S-class function.
+ * .
+ * - Trace buffer.
+ * - Parameters check.
+ * - Kernel assertions.
+ * - Kernel panics.
+ * .
+ * @note Stack checks are not implemented in this module but in the port
+ * layer in an architecture-dependent way.
+ * @{
+ */
+
+#include "ch.h"
+
+/*===========================================================================*/
+/* Module local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module exported variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module local types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module local variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module local functions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module exported functions. */
+/*===========================================================================*/
+
+#if CH_DBG_SYSTEM_STATE_CHECK || defined(__DOXYGEN__)
+/**
+ * @brief Guard code for @p chSysDisable().
+ *
+ * @notapi
+ */
+void _dbg_check_disable(void) {
+
+ if ((ch.dbg_isr_cnt != 0) || (ch.dbg_lock_cnt != 0))
+ chDbgPanic("SV#1");
+}
+
+/**
+ * @brief Guard code for @p chSysSuspend().
+ *
+ * @notapi
+ */
+void _dbg_check_suspend(void) {
+
+ if ((ch.dbg_isr_cnt != 0) || (ch.dbg_lock_cnt != 0))
+ chDbgPanic("SV#2");
+}
+
+/**
+ * @brief Guard code for @p chSysEnable().
+ *
+ * @notapi
+ */
+void _dbg_check_enable(void) {
+
+ if ((ch.dbg_isr_cnt != 0) || (ch.dbg_lock_cnt != 0))
+ chDbgPanic("SV#3");
+}
+
+/**
+ * @brief Guard code for @p chSysLock().
+ *
+ * @notapi
+ */
+void _dbg_check_lock(void) {
+
+ if ((ch.dbg_isr_cnt != 0) || (ch.dbg_lock_cnt != 0))
+ chDbgPanic("SV#4");
+ _dbg_enter_lock();
+}
+
+/**
+ * @brief Guard code for @p chSysUnlock().
+ *
+ * @notapi
+ */
+void _dbg_check_unlock(void) {
+
+ if ((ch.dbg_isr_cnt != 0) || (ch.dbg_lock_cnt <= 0))
+ chDbgPanic("SV#5");
+ _dbg_leave_lock();
+}
+
+/**
+ * @brief Guard code for @p chSysLockFromIsr().
+ *
+ * @notapi
+ */
+void _dbg_check_lock_from_isr(void) {
+
+ if ((ch.dbg_isr_cnt <= 0) || (ch.dbg_lock_cnt != 0))
+ chDbgPanic("SV#6");
+ _dbg_enter_lock();
+}
+
+/**
+ * @brief Guard code for @p chSysUnlockFromIsr().
+ *
+ * @notapi
+ */
+void _dbg_check_unlock_from_isr(void) {
+
+ if ((ch.dbg_isr_cnt <= 0) || (ch.dbg_lock_cnt <= 0))
+ chDbgPanic("SV#7");
+ _dbg_leave_lock();
+}
+
+/**
+ * @brief Guard code for @p CH_IRQ_PROLOGUE().
+ *
+ * @notapi
+ */
+void _dbg_check_enter_isr(void) {
+
+ port_lock_from_isr();
+ if ((ch.dbg_isr_cnt < 0) || (ch.dbg_lock_cnt != 0))
+ chDbgPanic("SV#8");
+ ch.dbg_isr_cnt++;
+ port_unlock_from_isr();
+}
+
+/**
+ * @brief Guard code for @p CH_IRQ_EPILOGUE().
+ *
+ * @notapi
+ */
+void _dbg_check_leave_isr(void) {
+
+ port_lock_from_isr();
+ if ((ch.dbg_isr_cnt <= 0) || (ch.dbg_lock_cnt != 0))
+ chDbgPanic("SV#9");
+ ch.dbg_isr_cnt--;
+ port_unlock_from_isr();
+}
+
+/**
+ * @brief I-class functions context check.
+ * @details Verifies that the system is in an appropriate state for invoking
+ * an I-class API function. A panic is generated if the state is
+ * not compatible.
+ *
+ * @api
+ */
+void chDbgCheckClassI(void) {
+
+ if ((ch.dbg_isr_cnt < 0) || (ch.dbg_lock_cnt <= 0))
+ chDbgPanic("SV#10");
+}
+
+/**
+ * @brief S-class functions context check.
+ * @details Verifies that the system is in an appropriate state for invoking
+ * an S-class API function. A panic is generated if the state is
+ * not compatible.
+ *
+ * @api
+ */
+void chDbgCheckClassS(void) {
+
+ if ((ch.dbg_isr_cnt != 0) || (ch.dbg_lock_cnt <= 0))
+ chDbgPanic("SV#11");
+}
+
+#endif /* CH_DBG_SYSTEM_STATE_CHECK */
+
+#if CH_DBG_ENABLE_TRACE || defined(__DOXYGEN__)
+/**
+ * @brief Trace circular buffer subsystem initialization.
+ * @note Internal use only.
+ */
+void _trace_init(void) {
+
+ ch.dbg_trace_buffer.tb_size = CH_DBG_TRACE_BUFFER_SIZE;
+ ch.dbg_trace_buffer.tb_ptr = &ch.dbg_trace_buffer.tb_buffer[0];
+}
+
+/**
+ * @brief Inserts in the circular debug trace buffer a context switch record.
+ *
+ * @param[in] otp the thread being switched out
+ *
+ * @notapi
+ */
+void _dbg_trace(thread_t *otp) {
+
+ ch.dbg_trace_buffer.tb_ptr->se_time = chVTGetSystemTimeX();
+ ch.dbg_trace_buffer.tb_ptr->se_tp = currp;
+ ch.dbg_trace_buffer.tb_ptr->se_wtobjp = otp->p_u.wtobjp;
+ ch.dbg_trace_buffer.tb_ptr->se_state = (uint8_t)otp->p_state;
+ if (++ch.dbg_trace_buffer.tb_ptr >=
+ &ch.dbg_trace_buffer.tb_buffer[CH_DBG_TRACE_BUFFER_SIZE])
+ ch.dbg_trace_buffer.tb_ptr = &ch.dbg_trace_buffer.tb_buffer[0];
+}
+#endif /* CH_DBG_ENABLE_TRACE */
+
+#if CH_DBG_ENABLED || defined(__DOXYGEN__)
+/**
+ * @brief Prints a panic message on the console and then halts the system.
+ *
+ * @param[in] msg the pointer to the panic message string
+ */
+void chDbgPanic(const char *msg) {
+
+ ch.dbg_panic_msg = msg;
+ chSysHalt();
+}
+#endif /* CH_DBG_ENABLED */
+
+/** @} */
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