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1 /* BranchSPARC.c */ |
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2 |
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3 #include "BranchSPARC.h" |
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4 |
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5 UInt32 SPARC_Convert(Byte *data, UInt32 size, UInt32 nowPos, int encoding) |
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6 { |
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7 UInt32 i; |
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8 for (i = 0; i + 4 <= size; i += 4) |
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9 { |
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10 if (data[i] == 0x40 && (data[i + 1] & 0xC0) == 0x00 || |
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11 data[i] == 0x7F && (data[i + 1] & 0xC0) == 0xC0) |
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12 { |
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13 UInt32 src = |
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14 ((UInt32)data[i + 0] << 24) | |
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15 ((UInt32)data[i + 1] << 16) | |
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16 ((UInt32)data[i + 2] << 8) | |
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17 ((UInt32)data[i + 3]); |
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18 UInt32 dest; |
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19 |
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20 src <<= 2; |
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21 if (encoding) |
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22 dest = nowPos + i + src; |
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23 else |
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24 dest = src - (nowPos + i); |
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25 dest >>= 2; |
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26 |
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27 dest = (((0 - ((dest >> 22) & 1)) << 22) & 0x3FFFFFFF) | (dest & 0x3FFFFF) | 0x40000000; |
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28 |
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29 data[i + 0] = (Byte)(dest >> 24); |
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30 data[i + 1] = (Byte)(dest >> 16); |
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31 data[i + 2] = (Byte)(dest >> 8); |
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32 data[i + 3] = (Byte)dest; |
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33 } |
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34 } |
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35 return i; |
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36 } |
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