diff options
Diffstat (limited to 'os/rt/ports/ARMCMx/chcore_v7m.c')
| -rw-r--r-- | os/rt/ports/ARMCMx/chcore_v7m.c | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/os/rt/ports/ARMCMx/chcore_v7m.c b/os/rt/ports/ARMCMx/chcore_v7m.c deleted file mode 100644 index 82cbb1c32..000000000 --- a/os/rt/ports/ARMCMx/chcore_v7m.c +++ /dev/null @@ -1,168 +0,0 @@ -/*
- ChibiOS - Copyright (C) 2006..2015 Giovanni Di Sirio.
-
- This file is part of ChibiOS.
-
- ChibiOS 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 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 chcore_v7m.c
- * @brief ARMv7-M architecture port code.
- *
- * @addtogroup ARMCMx_V7M_CORE
- * @{
- */
-
-#include "ch.h"
-
-/*===========================================================================*/
-/* Module local definitions. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Module exported variables. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Module local types. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Module local variables. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Module local functions. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Module interrupt handlers. */
-/*===========================================================================*/
-
-#if (CORTEX_SIMPLIFIED_PRIORITY == FALSE) || 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.
- */
-/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
-void SVC_Handler(void) {
-/*lint -restore*/
- struct port_extctx *ctxp;
-
-#if CORTEX_USE_FPU
- /* Enforcing unstacking of the FP part of the context.*/
- FPU->FPCCR &= ~FPU_FPCCR_LSPACT_Msk;
-#endif
-
- /* The port_extctx structure is pointed by the PSP register.*/
- ctxp = (struct port_extctx *)__get_PSP();
-
- /* Discarding the current exception context and positioning the stack to
- point to the real one.*/
- ctxp++;
-
- /* Restoring real position of the original stack frame.*/
- __set_PSP((uint32_t)ctxp);
-
- /* Restoring the normal interrupts status.*/
- port_unlock_from_isr();
-}
-#endif /* CORTEX_SIMPLIFIED_PRIORITY == FALSE */
-
-#if (CORTEX_SIMPLIFIED_PRIORITY == TRUE) || 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.
- */
-/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/
-void PendSV_Handler(void) {
-/*lint -restore*/
- struct port_extctx *ctxp;
-
-#if CORTEX_USE_FPU
- /* Enforcing unstacking of the FP part of the context.*/
- FPU->FPCCR &= ~FPU_FPCCR_LSPACT_Msk;
-#endif
-
- /* The port_extctx structure is pointed by the PSP register.*/
- ctxp = (struct port_extctx *)__get_PSP();
-
- /* Discarding the current exception context and positioning the stack to
- point to the real one.*/
- ctxp++;
-
- /* Writing back the modified PSP value.*/
- __set_PSP((uint32_t)ctxp);
-}
-#endif /* CORTEX_SIMPLIFIED_PRIORITY == TRUE */
-
-/*===========================================================================*/
-/* Module exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Exception exit redirection to _port_switch_from_isr().
- */
-void _port_irq_epilogue(void) {
-
- port_lock_from_isr();
- if ((SCB->ICSR & SCB_ICSR_RETTOBASE_Msk) != 0U) {
- struct port_extctx *ctxp;
-
-#if CORTEX_USE_FPU == TRUE
- /* Enforcing a lazy FPU state save by accessing the FPCSR register.*/
- (void) __get_FPSCR();
-#endif
-
- /* The port_extctx structure is pointed by the PSP register.*/
- ctxp = (struct port_extctx *)__get_PSP();
-
- /* Adding an artificial exception return context, there is no need to
- populate it fully.*/
- ctxp--;
-
- /* Setting up a fake XPSR register value.*/
- ctxp->xpsr = (regarm_t)0x01000000;
-#if CORTEX_USE_FPU == TRUE
- ctxp->fpscr = (regarm_t)FPU->FPDSCR;
-#endif
-
- /* Writing back the modified PSP value.*/
- __set_PSP((uint32_t)ctxp);
-
- /* 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;
- }
- else {
- /* Preemption not required, we just need to exit the exception
- atomically.*/
- ctxp->pc = (regarm_t)_port_exit_from_isr;
- }
-
- /* 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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