4.104.115
Last change
on this file since d126b320 was
d126b320,
checked in by Joel Sherrill <joel.sherrill@…>, on 09/23/08 at 14:07:05
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2008-09-23 Sebastian Huber <sebastian.huber@…>
- include/utility.h: New file.
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-
Property mode set to
100644
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File size:
1.1 KB
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1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Utility definitions and functions. |
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5 | */ |
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6 | |
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7 | /* |
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8 | * Copyright (c) 2008 |
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9 | * Embedded Brains GmbH |
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10 | * Obere Lagerstr. 30 |
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11 | * D-82178 Puchheim |
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12 | * Germany |
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13 | * rtems@embedded-brains.de |
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14 | * |
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15 | * The license and distribution terms for this file may be found in the file |
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16 | * LICENSE in this distribution or at http://www.rtems.com/license/LICENSE. |
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17 | */ |
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18 | |
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19 | #ifndef LIBCPU_SHARED_UTILITY_H |
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20 | #define LIBCPU_SHARED_UTILITY_H |
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21 | |
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22 | #ifdef __cplusplus |
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23 | extern "C" { |
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24 | #endif /* __cplusplus */ |
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25 | |
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26 | #define GET_REG_FIELD( reg, mask, shift) \ |
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27 | (((reg) & (mask)) >> (shift)) |
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28 | |
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29 | #define SET_REG_FIELD( reg, val, mask, shift) \ |
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30 | (((reg) & ~(mask)) | (((val) << (shift)) & (mask))) |
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31 | |
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32 | #define REG_FLAG_IS_SET( reg, flag) \ |
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33 | (((reg) & (flag)) != 0) |
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34 | |
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35 | #define REG_FLAG_IS_CLEARED( reg, flag) \ |
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36 | (((reg) & (flag)) == 0) |
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37 | |
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38 | #define SET_REG_FLAG( reg, flag) \ |
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39 | ((reg) | (flag)) |
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40 | |
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41 | #define CLEAR_REG_FLAG( reg, flag) \ |
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42 | ((reg) & ~(flag)) |
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43 | |
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44 | #define SET_REG_FLAGS( reg, flags, mask) \ |
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45 | (((reg) & ~(mask)) | (flags)) |
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46 | |
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47 | #define CLEAR_REG_FLAGS( reg, flags) \ |
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48 | ((reg) & ~(flags)) |
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49 | |
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50 | #ifdef __cplusplus |
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51 | } |
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52 | #endif /* __cplusplus */ |
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53 | |
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54 | #endif /* LIBCPU_SHARED_UTILITY_H */ |
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