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annotate src/gpf/ccd/bitfun.h @ 268:f2e52cab0a73

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abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 13 Jun 2021 18:17:53 +0000
parents 4e78acac3d88
children
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4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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1 /*
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2 +-----------------------------------------------------------------------------
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3 | Project :
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4 | Modul : bitfun.h
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5 +-----------------------------------------------------------------------------
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6 | Copyright 2002 Texas Instruments Berlin, AG
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7 | All rights reserved.
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8 |
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9 | This file is confidential and a trade secret of Texas
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10 | Instruments Berlin, AG
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11 | The receipt of or possession of this file does not convey
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12 | any rights to reproduce or disclose its contents or to
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13 | manufacture, use, or sell anything it may describe, in
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14 | whole, or in part, without the specific written consent of
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15 | Texas Instruments Berlin, AG.
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16 +-----------------------------------------------------------------------------
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17 | Purpose : Condat Coder Decoder
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18 | Prototypes of the elementary bit manipulation functions
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19 +-----------------------------------------------------------------------------
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20 */
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21
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22
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23 #ifndef __BITFUN
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24 #define __BITFUN
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25
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27 #ifndef __BITFUN_C__
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28
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29 EXTERN void bf_writePadBits (T_CCD_Globs *globs);
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30 EXTERN void bf_writeVal (ULONG value, ULONG bSize, T_CCD_Globs *globs);
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31 EXTERN ULONG bf_getBits (ULONG len, T_CCD_Globs *globs);
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32 EXTERN void bf_writeBitStr_PER (USHORT len, T_CCD_Globs *globs);
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33 EXTERN void bf_readBitStr_PER (USHORT len, T_CCD_Globs *globs);
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34 EXTERN void bf_writeBits (ULONG len, T_CCD_Globs *globs);
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35 EXTERN void bf_readBits (ULONG len, T_CCD_Globs *globs);
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36 EXTERN void bf_writeBitChunk (ULONG len, T_CCD_Globs *globs);
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37 EXTERN void bf_readBitChunk (ULONG len, T_CCD_Globs *globs);
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38 EXTERN BOOL bf_readBit (T_CCD_Globs *globs);
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39 EXTERN void bf_writeBit (BOOL Bit, T_CCD_Globs *globs);
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40 EXTERN UBYTE bf_decodeByteNumber (const ULONG len, T_CCD_Globs *globs);
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41 EXTERN ULONG bf_decodeShortNumber (const ULONG len, T_CCD_Globs *globs);
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42 EXTERN ULONG bf_decodeLongNumber (UBYTE len, T_CCD_Globs *globs);
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43 EXTERN void bf_codeShortNumber (UBYTE len, USHORT val, T_CCD_Globs *globs);
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44 EXTERN void bf_codeByteNumber (UBYTE len, UBYTE val, T_CCD_Globs *globs);
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45 EXTERN void bf_codeLongNumber (UBYTE len, ULONG val, T_CCD_Globs *globs);
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46 EXTERN void bf_recodeShortNumber (USHORT pos, UBYTE len, USHORT val, T_CCD_Globs *globs);
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47 EXTERN void bf_recodeByteNumber (USHORT pos, UBYTE len, UBYTE val, T_CCD_Globs *globs);
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48 EXTERN void bf_recodeBit (USHORT pos, UBYTE Bit, T_CCD_Globs *globs);
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49 EXTERN void bf_rShift8Bit (USHORT srcBitPos, USHORT bitLen, T_CCD_Globs *globs);
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50
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51 #endif /* __BITFUN_C__ */
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52
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53 /* a Macro for incrementing the position in the bitbuffer */
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54 /* _bitpos, _bytepos and _byteoffs are recalculated */
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55
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56 #define bf_incBitpos(A, globs) globs->bitpos = (USHORT)(globs->bitpos+(A));\
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57 globs->bytepos = (USHORT)(globs->bitpos >> 3);\
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58 globs->byteoffs = (UBYTE)(globs->bitpos & 7)
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59 #define bf_setBitpos(A, globs) globs->bitpos = (USHORT)(A);\
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60 globs->bytepos = (USHORT)(globs->bitpos >> 3);\
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61 globs->byteoffs = (UBYTE)(globs->bitpos & 7)
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62
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63 /*
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64 * end of bitstream if we can not read almost 4 bits
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65 */
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66 #define bf_endOfBitstream(globs) (globs->bitpos >= globs->maxBitpos)
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67
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68 #endif