forked from Imagelibrary/rtems
c5ed14844e
* rtems/score/armv7m.h, armv7m-context-initialize.c, armv7m-context-restore.c, armv7m-context-switch.c, armv7m-exception-handler-get.c, armv7m-exception-handler-set.c, armv7m-exception-priority-get.c, armv7m-exception-priority-set.c, armv7m-initialize.c, armv7m-isr-dispatch.c, armv7m-isr-enter-leave.c, armv7m-isr-level-get.c, armv7m-isr-level-set.c, armv7m-isr-vector-install.c, armv7m-multitasking-start-stop.c: New files. * Makefile.am, preinstall.am: Reflect changes above. * rtems/score/arm.h: Define ARM_MULTILIB_ARCH_V4 and ARM_MULTILIB_ARCH_V7M. * rtems/score/cpu.h, cpu_asm.S, cpu.c, arm_exc_abort.S, arm_exc_handler_high.c, arm_exc_handler_low.S, arm_exc_interrupt.S: Define CPU_HAS_HARDWARE_INTERRUPT_STACK to FALSE. Use ARM_MULTILIB_ARCH_V4 and ARM_MULTILIB_ARCH_V7M.
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/*
|
|
* Copyright (c) 2011 Sebastian Huber. All rights reserved.
|
|
*
|
|
* embedded brains GmbH
|
|
* Obere Lagerstr. 30
|
|
* 82178 Puchheim
|
|
* Germany
|
|
* <rtems@embedded-brains.de>
|
|
*
|
|
* The license and distribution terms for this file may be
|
|
* found in the file LICENSE in this distribution or at
|
|
* http://www.rtems.com/license/LICENSE.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <rtems/score/cpu.h>
|
|
|
|
#ifdef ARM_MULTILIB_ARCH_V7M
|
|
|
|
#include <rtems/score/armv7m.h>
|
|
|
|
void _CPU_Initialize( void )
|
|
{
|
|
/*
|
|
* The exception handler used to carry out the thead dispatching must have
|
|
* the lowest priority possible. No other exception handlers must have this
|
|
* priority if they use services that may lead to a thread dispatch. See
|
|
* also "ARMv7-M Architecture Reference Manual, Issue D" section B1.5.4
|
|
* "Exception priorities and preemption".
|
|
*/
|
|
_ARMV7M_Set_exception_priority( ARMV7M_VECTOR_SVC, 0xff );
|
|
_ARMV7M_Set_exception_priority( ARMV7M_VECTOR_PENDSV, 0xff );
|
|
_ARMV7M_Set_exception_handler(
|
|
ARMV7M_VECTOR_SVC,
|
|
_ARMV7M_Supervisor_call
|
|
);
|
|
_ARMV7M_Set_exception_handler(
|
|
ARMV7M_VECTOR_PENDSV,
|
|
_ARMV7M_Pendable_service_call
|
|
);
|
|
}
|
|
|
|
#endif /* ARM_MULTILIB_ARCH_V7M */
|