37 lines
902 B
C
37 lines
902 B
C
/* BranchSPARC.c */
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#include "BranchSPARC.h"
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UInt32 SPARC_Convert(Byte *data, UInt32 size, UInt32 nowPos, int encoding)
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{
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UInt32 i;
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for (i = 0; i + 4 <= size; i += 4)
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{
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if (data[i] == 0x40 && (data[i + 1] & 0xC0) == 0x00 ||
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data[i] == 0x7F && (data[i + 1] & 0xC0) == 0xC0)
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{
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UInt32 src =
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((UInt32)data[i + 0] << 24) |
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((UInt32)data[i + 1] << 16) |
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((UInt32)data[i + 2] << 8) |
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((UInt32)data[i + 3]);
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UInt32 dest;
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src <<= 2;
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if (encoding)
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dest = nowPos + i + src;
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else
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dest = src - (nowPos + i);
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dest >>= 2;
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dest = (((0 - ((dest >> 22) & 1)) << 22) & 0x3FFFFFFF) | (dest & 0x3FFFFF) | 0x40000000;
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data[i + 0] = (Byte)(dest >> 24);
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data[i + 1] = (Byte)(dest >> 16);
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data[i + 2] = (Byte)(dest >> 8);
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data[i + 3] = (Byte)dest;
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}
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}
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return i;
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}
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