4.115
Last change
on this file since f0d66b1 was
f0d66b1,
checked in by Sebastian Huber <sebastian.huber@…>, on 03/26/12 at 16:12:22
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arm: New function
Add and use function _ARMV7M_Set_exception_priority_and_handler(). Use
ARMV7M_EXCEPTION_PRIORITY_LOWEST define.
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Property mode set to
100644
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File size:
1.2 KB
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1 | /* |
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2 | * Copyright (c) 2011 Sebastian Huber. All rights reserved. |
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3 | * |
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4 | * embedded brains GmbH |
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5 | * Obere Lagerstr. 30 |
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6 | * 82178 Puchheim |
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7 | * Germany |
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8 | * <rtems@embedded-brains.de> |
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9 | * |
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10 | * The license and distribution terms for this file may be |
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11 | * found in the file LICENSE in this distribution or at |
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12 | * http://www.rtems.com/license/LICENSE. |
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13 | */ |
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14 | |
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15 | #ifdef HAVE_CONFIG_H |
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16 | #include "config.h" |
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17 | #endif |
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18 | |
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19 | #include <rtems/score/cpu.h> |
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20 | |
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21 | #ifdef ARM_MULTILIB_ARCH_V7M |
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22 | |
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23 | #include <rtems/score/armv7m.h> |
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24 | |
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25 | void _CPU_Initialize( void ) |
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26 | { |
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27 | /* |
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28 | * The exception handler used to carry out the thead dispatching must have |
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29 | * the lowest priority possible. No other exception handlers must have this |
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30 | * priority if they use services that may lead to a thread dispatch. See |
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31 | * also "ARMv7-M Architecture Reference Manual, Issue D" section B1.5.4 |
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32 | * "Exception priorities and preemption". |
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33 | */ |
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34 | _ARMV7M_Set_exception_priority_and_handler( |
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35 | ARMV7M_VECTOR_SVC, |
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36 | ARMV7M_EXCEPTION_PRIORITY_LOWEST, |
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37 | _ARMV7M_Supervisor_call |
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38 | ); |
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39 | _ARMV7M_Set_exception_priority_and_handler( |
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40 | ARMV7M_VECTOR_PENDSV, |
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41 | ARMV7M_EXCEPTION_PRIORITY_LOWEST, |
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42 | _ARMV7M_Pendable_service_call |
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43 | ); |
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44 | } |
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45 | |
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46 | #endif /* ARM_MULTILIB_ARCH_V7M */ |
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