git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1149 35acf78f-673a-0410-8e92-d51de3d6d3f4

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diff --git a/src/include/sys.h b/src/include/sys.h
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-/*

-    ChibiOS/RT - Copyright (C) 2006-2007 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 sys.h

- * @brief System related macros and structures.

- * @addtogroup System

- * @{

- */

-

-#ifndef _SYS_H_

-#define _SYS_H_

-

-/**

- * @brief Halts the system.

- * @details This function is invoked by the operating system when an

- * unrecoverable error is detected (as example because a programming error in

- * the application code that triggers an assertion while in debug mode).

- */

-#define chSysHalt() port_halt()

-

-/**

- * @brief Performs a context switch.

- *

- * @param otp the thread to be switched out

- * @param ntp the thread to be switched in

- */

-#define chSysSwitchI(otp, ntp) port_switch(otp, ntp)

-

-/**

- * @brief Raises the system interrupt priority mask to the maximum level.

- * @details All the maskable interrupt sources are disabled regardless their

- * hardware priority.

- *

- * @note The implementation is architecture dependent, it may just disable the

- *       interrupts or be exactly equivalent to @p chSysDisable().

- * @note Do not invoke this API from within a kernel lock.

- */

-#define chSysDisable() port_disable()

-

-/**

- * @brief Raises the system interrupt priority mask to system level.

- * @details The interrupt sources that should not be able to preempt the kernel

- * are disabled, interrupt sources with higher priority are still enabled.

- *

- * @note The implementation is architecture dependent, it may just disable the

- *       interrupts.

- * @note Do not invoke this API from within a kernel lock.

- * @note This API is no replacement for @p chSysLock(), the @p chSysLock()

- *       could do more than just disable the interrupts.

- */

-#define chSysSuspend() port_suspend()

-

-/**

- * @brief Lowers the system interrupt priority mask to user level.

- * @details All the interrupt sources are enabled.

- *

- * @note The implementation is architecture dependent, it may just enable the

- *       interrupts.

- * @note Do not invoke this API from within a kernel lock.

- * @note This API is no replacement for @p chSysUnlock(), the @p chSysUnlock()

- *       could do more than just enable the interrupts.

- */

-#define chSysEnable() port_enable()

-

-/**

- * @brief Enters the kernel lock mode.

- *

- * @note The use of kernel lock mode is not recommended in the user code, it is

- *       a better idea to use the semaphores or mutexes instead.

- * @see CH_USE_NESTED_LOCKS

- */

-#if CH_USE_NESTED_LOCKS || defined(__DOXYGEN__)

-#if CH_OPTIMIZE_SPEED || defined(__DOXYGEN__)

-#define chSysLock() {                                                   \

-  if (currp->p_locks++ == 0)                                            \

-    port_lock();                                                        \

-}

-#endif /* CH_OPTIMIZE_SPEED */

-#else /* !CH_USE_NESTED_LOCKS */

-#define chSysLock() port_lock()

-#endif /* !CH_USE_NESTED_LOCKS */

-

-/**

- * @brief Leaves the kernel lock mode.

- *

- * @note The use of kernel lock mode is not recommended in the user code, it is

- *       a better idea to use the semaphores or mutexes instead.

- * @see CH_USE_NESTED_LOCKS

- */

-#if CH_USE_NESTED_LOCKS || defined(__DOXYGEN__)

-#if CH_OPTIMIZE_SPEED || defined(__DOXYGEN__)

-#define chSysUnlock() {                                                 \

-  if (--currp->p_locks == 0)                                            \

-    port_unlock();                                                      \

-}

-#endif /* CH_OPTIMIZE_SPEED */

-#else /* !CH_USE_NESTED_LOCKS */

-#define chSysUnlock() port_unlock()

-#endif /* !CH_USE_NESTED_LOCKS */

-

-/**

- * @brief Enters the kernel lock mode from within an interrupt handler.

- *

- * @note This API may do nothing on some architectures, it is required because

- *       on ports that support preemptable interrupt handlers it is required to

- *       raise the interrupt mask to the same level of the system mutual

- *       exclusion zone.<br>

- *       It is good practice to invoke this API before invoking any I-class

- *       syscall from an interrupt handler.

- * @note This API must be invoked exclusively from interrupt handlers.

- */

-#define chSysLockFromIsr() port_lock_from_isr()

-

-/**

- * @brief Leaves the kernel lock mode from within an interrupt handler.

- *

- * @note This API may do nothing on some architectures, it is required because

- *       on ports that support preemptable interrupt handlers it is required to

- *       raise the interrupt mask to the same level of the system mutual

- *       exclusion zone.<br>

- *       It is good practice to invoke this API after invoking any I-class

- *       syscall from an interrupt handler.

- * @note This API must be invoked exclusively from interrupt handlers.

- */

-#define chSysUnlockFromIsr() port_unlock_from_isr()

-

-/**

- * @brief IRQ handler enter code.

- *

- * @note Usually IRQ handlers functions are also declared naked.

- * @note On some architectures this macro can be empty.

- */

-#define CH_IRQ_PROLOGUE() PORT_IRQ_PROLOGUE()

-

-/**

- * @brief IRQ handler exit code.

- *

- * @note Usually IRQ handlers function are also declared naked.

- * @note This macro usually performs the final reschedulation by using

- *       @p chSchRescRequiredI() and @p chSchDoRescheduleI().

- */

-#define CH_IRQ_EPILOGUE() PORT_IRQ_EPILOGUE()

-

-/**

- * @brief Standard IRQ handler declaration.

- *
- * @note @p id can be a function name or a vector number depending on the

- *       port implementation.

- */

-#define CH_IRQ_HANDLER(id) PORT_IRQ_HANDLER(id)

-

-#ifdef __cplusplus

-extern "C" {

-#endif

-  void chSysInit(void);

-  void chSysTimerHandlerI(void);

-#if CH_USE_NESTED_LOCKS && !CH_OPTIMIZE_SPEED

-  void chSysLock(void);

-  void chSysUnlock(void);

-#endif /* CH_USE_NESTED_LOCKS && !CH_OPTIMIZE_SPEED */

-#ifdef __cplusplus

-}

-#endif

-

-#endif /* _SYS_H_ */

-

-/** @} */