diff options
Diffstat (limited to 'os/ports/GCC/ARMCMx/old/chcore_v7m.c')
-rw-r--r-- | os/ports/GCC/ARMCMx/old/chcore_v7m.c | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/os/ports/GCC/ARMCMx/old/chcore_v7m.c b/os/ports/GCC/ARMCMx/old/chcore_v7m.c deleted file mode 100644 index 244ff396e..000000000 --- a/os/ports/GCC/ARMCMx/old/chcore_v7m.c +++ /dev/null @@ -1,126 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
- 2011 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 ARMCMx/chcore_v7m.c
- * @brief ARMv7-M architecture port code.
- *
- * @addtogroup ARMCMx_V7M_CORE
- * @{
- */
-
-#include "ch.h"
-
-#if !CH_OPTIMIZE_SPEED
-void _port_lock(void) {
- register uint32_t tmp asm ("r3") = CORTEX_BASEPRI_KERNEL;
- asm volatile ("msr BASEPRI, %0" : : "r" (tmp));
-}
-
-void _port_unlock(void) {
- register uint32_t tmp asm ("r3") = CORTEX_BASEPRI_DISABLED;
- asm volatile ("msr BASEPRI, %0" : : "r" (tmp));
-}
-#endif
-
-/**
- * @brief System Timer vector.
- * @details This interrupt is used as system tick.
- * @note The timer must be initialized in the startup code.
- */
-void SysTickVector(void) {
-
- chSysLockFromIsr();
- chSysTimerHandlerI();
- if (chSchIsRescRequiredExI())
- SCB_ICSR = ICSR_PENDSVSET;
- chSysUnlockFromIsr();
-}
-
-#define PUSH_CONTEXT(sp, prio) { \
- asm volatile ("mrs %0, PSP \n\t" \
- "stmdb %0!, {r3-r11,lr}" : \
- "=r" (sp) : "r" (sp), "r" (prio)); \
-}
-
-#define POP_CONTEXT(sp) { \
- asm volatile ("ldmia %0!, {r3-r11, lr} \n\t" \
- "msr PSP, %0 \n\t" \
- "msr BASEPRI, r3 \n\t" \
- "bx lr" : "=r" (sp) : "r" (sp)); \
-}
-
-/**
- * @brief SVC vector.
- * @details The SVC vector is used for commanded context switch. Structures
- * @p intctx are saved and restored from the process stacks of the
- * switched threads.
- *
- * @param[in] ntp the thread to be switched it
- * @param[in] otp the thread to be switched out
- */
-#if !defined(__DOXYGEN__)
-__attribute__((naked))
-#endif
-void SVCallVector(Thread *ntp, Thread *otp) {
- register struct intctx *sp_thd asm("r2");
- register uint32_t prio asm ("r3");
-
- asm volatile ("mrs r3, BASEPRI" : "=r" (prio) : );
- PUSH_CONTEXT(sp_thd, prio)
-
- otp->p_ctx.r13 = sp_thd;
- sp_thd = ntp->p_ctx.r13;
-
- POP_CONTEXT(sp_thd)
-}
-
-/**
- * @brief Preemption code.
- */
-#if !defined(__DOXYGEN__)
-__attribute__((naked))
-#endif
-void PendSVVector(void) {
- register struct intctx *sp_thd asm("r2");
- register uint32_t prio asm ("r3");
- Thread *otp, *ntp;
-
- chSysLockFromIsr();
-
- prio = CORTEX_BASEPRI_DISABLED;
- PUSH_CONTEXT(sp_thd, prio)
-
- (otp = currp)->p_ctx.r13 = sp_thd;
- ntp = fifo_remove(&rlist.r_queue);
- setcurrp(ntp);
- ntp->p_state = THD_STATE_CURRENT;
- chSchReadyI(otp);
-#if CH_TIME_QUANTUM > 0
- /* Set the round-robin time quantum.*/
- rlist.r_preempt = CH_TIME_QUANTUM;
-#endif
- chDbgTrace(otp);
- sp_thd = ntp->p_ctx.r13;
-
- POP_CONTEXT(sp_thd)
-}
-
-/** @} */
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