diff options
Diffstat (limited to 'os/ports/IAR/ARMCMx/chcore_v7m.c')
| -rw-r--r-- | os/ports/IAR/ARMCMx/chcore_v7m.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/os/ports/IAR/ARMCMx/chcore_v7m.c b/os/ports/IAR/ARMCMx/chcore_v7m.c deleted file mode 100644 index c9d45b1a6..000000000 --- a/os/ports/IAR/ARMCMx/chcore_v7m.c +++ /dev/null @@ -1,198 +0,0 @@ -/*
- 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 IAR/ARMCMx/chcore_v7m.c
- * @brief ARMv7-M architecture port code.
- *
- * @addtogroup IAR_ARMCMx_V7M_CORE
- * @{
- */
-
-#include "ch.h"
-
-/*===========================================================================*/
-/* Port interrupt handlers. */
-/*===========================================================================*/
-
-/**
- * @brief System Timer vector.
- * @details This interrupt is used as system tick.
- * @note The timer must be initialized in the startup code.
- */
-CH_IRQ_HANDLER(SysTickVector) {
-
- CH_IRQ_PROLOGUE();
-
- chSysLockFromIsr();
- chSysTimerHandlerI();
- chSysUnlockFromIsr();
-
- CH_IRQ_EPILOGUE();
-}
-
-#if !CORTEX_SIMPLIFIED_PRIORITY || defined(__DOXYGEN__)
-/**
- * @brief SVC vector.
- * @details The SVC vector is used for exception mode re-entering after a
- * context switch.
- * @note The PendSV vector is only used in advanced kernel mode.
- */
-void SVCallVector(void) {
- struct extctx *ctxp;
-
- /* Current PSP value.*/
- ctxp = (struct extctx *)__get_PSP();
-
- /* Discarding the current exception context and positioning the stack to
- point to the real one.*/
- ctxp++;
-
-#if CORTEX_USE_FPU
- /* Restoring the special register SCB_FPCCR.*/
- SCB_FPCCR = (uint32_t)ctxp->fpccr;
- SCB_FPCAR = SCB_FPCAR + sizeof (struct extctx);
-#endif
- __set_PSP((unsigned long)ctxp);
- port_unlock_from_isr();
-}
-#endif /* !CORTEX_SIMPLIFIED_PRIORITY */
-
-#if CORTEX_SIMPLIFIED_PRIORITY || defined(__DOXYGEN__)
-/**
- * @brief PendSV vector.
- * @details The PendSV vector is used for exception mode re-entering after a
- * context switch.
- * @note The PendSV vector is only used in compact kernel mode.
- */
-void PendSVVector(void) {
- struct extctx *ctxp;
-
- /* Current PSP value.*/
- ctxp = (struct extctx *)__get_PSP();
-
- /* Discarding the current exception context and positioning the stack to
- point to the real one.*/
- ctxp++;
-
-#if CORTEX_USE_FPU
- /* Restoring the special register SCB_FPCCR.*/
- SCB_FPCCR = (uint32_t)ctxp->fpccr;
- SCB_FPCAR = SCB_FPCAR + sizeof (struct extctx);
-#endif
- __set_PSP((unsigned long)ctxp);
-}
-#endif /* CORTEX_SIMPLIFIED_PRIORITY */
-
-/*===========================================================================*/
-/* Port exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Port-related initialization code.
- */
-void _port_init(void) {
-
- /* Initialization of the vector table and priority related settings.*/
- SCB_VTOR = CORTEX_VTOR_INIT;
- SCB_AIRCR = AIRCR_VECTKEY | AIRCR_PRIGROUP(CORTEX_PRIGROUP_INIT);
-
-#if CORTEX_USE_FPU
- {
- /* Initializing the FPU context save in lazy mode.*/
- SCB_FPCCR = FPCCR_ASPEN | FPCCR_LSPEN;
-
- /* CP10 and CP11 set to full access.*/
- SCB_CPACR |= 0x00F00000;
-
- /* Enables FPU context save/restore on exception entry/exit (FPCA bit).*/
- __set_CONTROL(__get_CONTROL() | 4);
-
- /* FPSCR and FPDSCR initially zero.*/
- __set_FPSCR(0);
- SCB_FPDSCR = 0;
- }
-#endif
-
- /* Initialization of the system vectors used by the port.*/
- nvicSetSystemHandlerPriority(HANDLER_SVCALL,
- CORTEX_PRIORITY_MASK(CORTEX_PRIORITY_SVCALL));
- nvicSetSystemHandlerPriority(HANDLER_PENDSV,
- CORTEX_PRIORITY_MASK(CORTEX_PRIORITY_PENDSV));
- nvicSetSystemHandlerPriority(HANDLER_SYSTICK,
- CORTEX_PRIORITY_MASK(CORTEX_PRIORITY_SYSTICK));
-}
-
-/**
- * @brief Exception exit redirection to _port_switch_from_isr().
- */
-void _port_irq_epilogue(void) {
-
- port_lock_from_isr();
- if ((SCB_ICSR & ICSR_RETTOBASE) != 0) {
- struct extctx *ctxp;
-
- /* Current PSP value.*/
- ctxp = (struct extctx *)__get_PSP();
-
- /* Adding an artificial exception return context, there is no need to
- populate it fully.*/
- ctxp--;
- __set_PSP((unsigned long)ctxp);
- ctxp->xpsr = (regarm_t)0x01000000;
-
- /* The exit sequence is different depending on if a preemption is
- required or not.*/
- if (chSchIsPreemptionRequired()) {
- /* Preemption is required we need to enforce a context switch.*/
- ctxp->pc = (regarm_t)_port_switch_from_isr;
-#if CORTEX_USE_FPU
- /* Triggering a lazy FPU state save.*/
- (void)__get_FPSCR();
-#endif
- }
- else {
- /* Preemption not required, we just need to exit the exception
- atomically.*/
- ctxp->pc = (regarm_t)_port_exit_from_isr;
- }
-
-#if CORTEX_USE_FPU
- {
- uint32_t fpccr;
-
- /* Saving the special register SCB_FPCCR into the reserved offset of
- the Cortex-M4 exception frame.*/
- (ctxp + 1)->fpccr = (regarm_t)(fpccr = SCB_FPCCR);
-
- /* Now the FPCCR is modified in order to not restore the FPU status
- from the artificial return context.*/
- SCB_FPCCR = fpccr | FPCCR_LSPACT;
- }
-#endif
-
- /* Note, returning without unlocking is intentional, this is done in
- order to keep the rest of the context switch atomic.*/
- return;
- }
- port_unlock_from_isr();
-}
-
-/** @} */
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