1 /* BraIA64.c -- Converter for IA-64 code
\r
2 2013-11-12 : Igor Pavlov : Public domain */
\r
8 static const Byte kBranchTable[32] =
\r
10 0, 0, 0, 0, 0, 0, 0, 0,
\r
11 0, 0, 0, 0, 0, 0, 0, 0,
\r
12 4, 4, 6, 6, 0, 0, 7, 7,
\r
13 4, 4, 0, 0, 4, 4, 0, 0
\r
16 SizeT IA64_Convert(Byte *data, SizeT size, UInt32 ip, int encoding)
\r
22 for (i = 0; i <= size; i += 16)
\r
24 UInt32 instrTemplate = data[i] & 0x1F;
\r
25 UInt32 mask = kBranchTable[instrTemplate];
\r
28 for (slot = 0; slot < 3; slot++, bitPos += 41)
\r
30 UInt32 bytePos, bitRes;
\r
31 UInt64 instruction, instNorm;
\r
33 if (((mask >> slot) & 1) == 0)
\r
35 bytePos = (bitPos >> 3);
\r
36 bitRes = bitPos & 0x7;
\r
38 for (j = 0; j < 6; j++)
\r
39 instruction += (UInt64)data[i + j + bytePos] << (8 * j);
\r
41 instNorm = instruction >> bitRes;
\r
42 if (((instNorm >> 37) & 0xF) == 0x5 && ((instNorm >> 9) & 0x7) == 0)
\r
44 UInt32 src = (UInt32)((instNorm >> 13) & 0xFFFFF);
\r
46 src |= ((UInt32)(instNorm >> 36) & 1) << 20;
\r
51 dest = ip + (UInt32)i + src;
\r
53 dest = src - (ip + (UInt32)i);
\r
57 instNorm &= ~((UInt64)(0x8FFFFF) << 13);
\r
58 instNorm |= ((UInt64)(dest & 0xFFFFF) << 13);
\r
59 instNorm |= ((UInt64)(dest & 0x100000) << (36 - 20));
\r
61 instruction &= (1 << bitRes) - 1;
\r
62 instruction |= (instNorm << bitRes);
\r
63 for (j = 0; j < 6; j++)
\r
64 data[i + j + bytePos] = (Byte)(instruction >> (8 * j));
\r